865874457 has 12 divisors (see below), whose sum is σ = 1429380160. Its totient is φ = 494785368.

The previous prime is 865874453. The next prime is 865874461. The reversal of 865874457 is 754478568.

865874457 is a `hidden beast` number, since 8 + 6 + 587 + 4 + 4 + 57 = 666.

It is an interprime number because it is at equal distance from previous prime (865874453) and next prime (865874461).

It is not a de Polignac number, because 865874457 - 2² = 865874453 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (865874453) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6871957 + ... + 6872082.

Almost surely, 2^865874457 is an apocalyptic number.

It is an amenable number.

865874457 is a deficient number, since it is larger than the sum of its proper divisors (563505703).

865874457 is a wasteful number, since it uses less digits than its factorization.

865874457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13744052 (or 13744049 counting only the distinct ones).

The product of its digits is 7526400, while the sum is 54.

The square root of 865874457 is about 29425.7447994099. The cubic root of 865874457 is about 953.1289103013.

The spelling of 865874457 in words is "eight hundred sixty-five million, eight hundred seventy-four thousand, four hundred fifty-seven".