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68706900 = 22335225447
BaseRepresentation
bin1000001100001…
…10001001010100
311210021200011000
410012012021110
5120042110100
610452343300
71462666443
oct406061124
9153250130
1068706900
1135868569
121b014b30
1311308092
1491a6d5a
156072900
hex4186254

68706900 has 72 divisors (see below), whose sum is σ = 220888640. Its totient is φ = 18321120.

The previous prime is 68706893. The next prime is 68706929. The reversal of 68706900 is 960786.

It is a super-2 number, since 2×687069002 = 9441276215220000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10024 + ... + 15423.

Almost surely, 268706900 is an apocalyptic number.

68706900 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68706900 is an abundant number, since it is smaller than the sum of its proper divisors (152181740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68706900 is a wasteful number, since it uses less digits than its factorization.

68706900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25470 (or 25457 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 68706900 is about 8288.9625406320. The cubic root of 68706900 is about 409.5750107461.

The spelling of 68706900 in words is "sixty-eight million, seven hundred six thousand, nine hundred".

Divisors: 1 2 3 4 5 6 9 10 12 15 18 20 25 27 30 36 45 50 54 60 75 90 100 108 135 150 180 225 270 300 450 540 675 900 1350 2700 25447 50894 76341 101788 127235 152682 229023 254470 305364 381705 458046 508940 636175 687069 763410 916092 1145115 1272350 1374138 1526820 1908525 2290230 2544700 2748276 3435345 3817050 4580460 5725575 6870690 7634100 11451150 13741380 17176725 22902300 34353450 68706900