68165977 has 8 divisors (see below), whose sum is σ = 78276960. Its totient is φ = 58707360.

The previous prime is 68165963. The next prime is 68166031. The reversal of 68165977 is 77956186.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68165977 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68165977.

It is not an unprimeable number, because it can be changed into a prime (68165917) 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, 162868 + ... + 163285.

It is an arithmetic number, because the mean of its divisors is an integer number (9784620).

Almost surely, 2^68165977 is an apocalyptic number.

It is an amenable number.

68165977 is a deficient number, since it is larger than the sum of its proper divisors (10110983).

68165977 is a wasteful number, since it uses less digits than its factorization.

68165977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326183.

The product of its digits is 635040, while the sum is 49.

The square root of 68165977 is about 8256.2689515301. The cubic root of 68165977 is about 408.4973290272.

The spelling of 68165977 in words is "sixty-eight million, one hundred sixty-five thousand, nine hundred seventy-seven".