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68666343 = 3199115019
BaseRepresentation
bin1000001011111…
…00001111100111
311210012121111220
410011330033213
5120034310333
610451431423
71462440264
oct405741747
9153177456
1068666343
1135840049
121abb5573
13112c2795
14919626b
1560658b3
hex417c3e7

68666343 has 8 divisors (see below), whose sum is σ = 92016000. Its totient is φ = 45547128.

The previous prime is 68666341. The next prime is 68666347. The reversal of 68666343 is 34366686.

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

It is not a de Polignac number, because 68666343 - 21 = 68666341 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68666295 and 68666304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68666341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56913 + ... + 58106.

It is an arithmetic number, because the mean of its divisors is an integer number (11502000).

Almost surely, 268666343 is an apocalyptic number.

68666343 is a deficient number, since it is larger than the sum of its proper divisors (23349657).

68666343 is a wasteful number, since it uses less digits than its factorization.

68666343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115221.

The product of its digits is 373248, while the sum is 42.

The square root of 68666343 is about 8286.5157334069. The cubic root of 68666343 is about 409.4944055315.

The spelling of 68666343 in words is "sixty-eight million, six hundred sixty-six thousand, three hundred forty-three".

Divisors: 1 3 199 597 115019 345057 22888781 68666343