86857497 has 12 divisors (see below), whose sum is σ = 126100260. Its totient is φ = 57609888.

The previous prime is 86857487. The next prime is 86857501. The reversal of 86857497 is 79475868.

86857497 is a `hidden beast` number, since 8 + 68 + 574 + 9 + 7 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 38081241 + 48776256 = 6171^2 + 6984^2 .

It is not a de Polignac number, because 86857497 - 2⁴ = 86857481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (86857427) 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, 22722 + ... + 26267.

It is an arithmetic number, because the mean of its divisors is an integer number (10508355).

Almost surely, 2^86857497 is an apocalyptic number.

It is an amenable number.

86857497 is a deficient number, since it is larger than the sum of its proper divisors (39242763).

86857497 is a wasteful number, since it uses less digits than its factorization.

86857497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49192 (or 49189 counting only the distinct ones).

The product of its digits is 3386880, while the sum is 54.

The square root of 86857497 is about 9319.7369598074. The cubic root of 86857497 is about 442.8626998510.

The spelling of 86857497 in words is "eighty-six million, eight hundred fifty-seven thousand, four hundred ninety-seven".