68790057 has 16 divisors (see below), whose sum is σ = 105028992. Its totient is φ = 39231360.

The previous prime is 68790053. The next prime is 68790077. The reversal of 68790057 is 75009786.

It is not a de Polignac number, because 68790057 - 2² = 68790053 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68790053) 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, 8757 + ... + 14637.

It is an arithmetic number, because the mean of its divisors is an integer number (6564312).

Almost surely, 2^68790057 is an apocalyptic number.

It is an amenable number.

68790057 is a deficient number, since it is larger than the sum of its proper divisors (36238935).

68790057 is a wasteful number, since it uses less digits than its factorization.

68790057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6448.

The product of its (nonzero) digits is 105840, while the sum is 42.

The square root of 68790057 is about 8293.9771521267. The cubic root of 68790057 is about 409.7401824037.

The spelling of 68790057 in words is "sixty-eight million, seven hundred ninety thousand, fifty-seven".