68817057 has 16 divisors (see below), whose sum is σ = 93063168. Its totient is φ = 45228800.

The previous prime is 68817053. The next prime is 68817061. The reversal of 68817057 is 75071886.

It is an interprime number because it is at equal distance from previous prime (68817053) and next prime (68817061).

It is a cyclic number.

It is not a de Polignac number, because 68817057 - 2² = 68817053 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68817053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115753 + ... + 116345.

It is an arithmetic number, because the mean of its divisors is an integer number (5816448).

Almost surely, 2^68817057 is an apocalyptic number.

It is an amenable number.

68817057 is a deficient number, since it is larger than the sum of its proper divisors (24246111).

68817057 is a wasteful number, since it uses less digits than its factorization.

68817057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1080.

The product of its (nonzero) digits is 94080, while the sum is 42.

The square root of 68817057 is about 8295.6046795879. The cubic root of 68817057 is about 409.7937828721.

The spelling of 68817057 in words is "sixty-eight million, eight hundred seventeen thousand, fifty-seven".