860812057 has 6 divisors (see below), whose sum is σ = 1001352858. Its totient is φ = 737838864.

The previous prime is 860812039. The next prime is 860812103. The reversal of 860812057 is 750218068.

It can be written as a sum of positive squares in only one way, i.e., 853282521 + 7529536 = 29211^2 + 2744^2 .

It is a de Polignac number, because none of the positive numbers 2^k-860812057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (860812457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8783748 + ... + 8783845.

It is an arithmetic number, because the mean of its divisors is an integer number (166892143).

Almost surely, 2^860812057 is an apocalyptic number.

It is an amenable number.

860812057 is a deficient number, since it is larger than the sum of its proper divisors (140540801).

860812057 is a wasteful number, since it uses less digits than its factorization.

860812057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17567607 (or 17567600 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 37.

The square root of 860812057 is about 29339.5987873045. The cubic root of 860812057 is about 951.2677652302.

The spelling of 860812057 in words is "eight hundred sixty million, eight hundred twelve thousand, fifty-seven".