86115897 has 24 divisors (see below), whose sum is σ = 150523776. Its totient is φ = 46313856.

The previous prime is 86115893. The next prime is 86115907. The reversal of 86115897 is 79851168.

86115897 is a `hidden beast` number, since 8 + 61 + 1 + 589 + 7 = 666.

It is not a de Polignac number, because 86115897 - 2² = 86115893 is a prime.

It is a super-2 number, since 2×86115897² = 14831895432229218, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (86115893) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39133 + ... + 41274.

It is an arithmetic number, because the mean of its divisors is an integer number (6271824).

Almost surely, 2^86115897 is an apocalyptic number.

It is an amenable number.

86115897 is a deficient number, since it is larger than the sum of its proper divisors (64407879).

86115897 is a wasteful number, since it uses less digits than its factorization.

86115897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80437 (or 80434 counting only the distinct ones).

The product of its digits is 120960, while the sum is 45.

The square root of 86115897 is about 9279.8651391063. The cubic root of 86115897 is about 441.5986901594.

The spelling of 86115897 in words is "eighty-six million, one hundred fifteen thousand, eight hundred ninety-seven".