86595021 has 16 divisors (see below), whose sum is σ = 130206400. Its totient is φ = 56867184.

The previous prime is 86595017. The next prime is 86595037. The reversal of 86595021 is 12059568.

It is a happy number.

It is not a de Polignac number, because 86595021 - 2² = 86595017 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86595001) 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, 22126 + ... + 25743.

It is an arithmetic number, because the mean of its divisors is an integer number (8137900).

Almost surely, 2^86595021 is an apocalyptic number.

It is an amenable number.

86595021 is a deficient number, since it is larger than the sum of its proper divisors (43611379).

86595021 is a wasteful number, since it uses less digits than its factorization.

86595021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47945 (or 47939 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The square root of 86595021 is about 9305.6445773520. The cubic root of 86595021 is about 442.4161518807.

The spelling of 86595021 in words is "eighty-six million, five hundred ninety-five thousand, twenty-one".