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68376985 = 582116657
BaseRepresentation
bin1000001001101…
…01100110011001
311202122220120221
410010311212121
5120001030420
610441320041
71460123545
oct404654631
9152586527
1068376985
1135662706
121aa96021
1311220b71
14911ca25
156009caa
hex4135999

68376985 has 8 divisors (see below), whose sum is σ = 82157256. Its totient is φ = 54631680.

The previous prime is 68376961. The next prime is 68377003. The reversal of 68376985 is 58967386.

It can be written as a sum of positive squares in 4 ways, for example, as 19642624 + 48734361 = 4432^2 + 6981^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 68376985 - 213 = 68368793 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4224 + ... + 12433.

It is an arithmetic number, because the mean of its divisors is an integer number (10269657).

Almost surely, 268376985 is an apocalyptic number.

It is an amenable number.

68376985 is a deficient number, since it is larger than the sum of its proper divisors (13780271).

68376985 is a wasteful number, since it uses less digits than its factorization.

68376985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17483.

The product of its digits is 2177280, while the sum is 52.

The square root of 68376985 is about 8269.0377311994. The cubic root of 68376985 is about 408.9183964502.

The spelling of 68376985 in words is "sixty-eight million, three hundred seventy-six thousand, nine hundred eighty-five".

Divisors: 1 5 821 4105 16657 83285 13675397 68376985