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68604923 = 298112917
BaseRepresentation
bin1000001011011…
…01001111111011
311210002111021002
410011231033323
5120030324143
610450235215
71462063232
oct405551773
9153074232
1068604923
11357a8992
121ab85b0b
13112a083a
14917bb19
1560525b8
hex416d3fb

68604923 has 8 divisors (see below), whose sum is σ = 71082480. Its totient is φ = 66134880.

The previous prime is 68604881. The next prime is 68604941. The reversal of 68604923 is 32940686.

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

It is a cyclic number.

It is not a de Polignac number, because 68604923 - 28 = 68604667 is a prime.

It is a super-3 number, since 3×686049233 (a number of 24 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (68604323) 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, 22061 + ... + 24977.

It is an arithmetic number, because the mean of its divisors is an integer number (8885310).

Almost surely, 268604923 is an apocalyptic number.

68604923 is a deficient number, since it is larger than the sum of its proper divisors (2477557).

68604923 is a wasteful number, since it uses less digits than its factorization.

68604923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3757.

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 68604923 is about 8282.8088834646. The cubic root of 68604923 is about 409.3722755913.

The spelling of 68604923 in words is "sixty-eight million, six hundred four thousand, nine hundred twenty-three".

Divisors: 1 29 811 2917 23519 84593 2365687 68604923