86576021 has 16 divisors (see below), whose sum is σ = 102359040. Its totient is φ = 71688240.

The previous prime is 86575997. The next prime is 86576023. The reversal of 86576021 is 12067568.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86576021 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86576023) 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, 24326 + ... + 27656.

It is an arithmetic number, because the mean of its divisors is an integer number (6397440).

Almost surely, 2^86576021 is an apocalyptic number.

It is an amenable number.

86576021 is a deficient number, since it is larger than the sum of its proper divisors (15783019).

86576021 is a wasteful number, since it uses less digits than its factorization.

86576021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3464.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 86576021 is about 9304.6236355911. The cubic root of 86576021 is about 442.3837923538.

The spelling of 86576021 in words is "eighty-six million, five hundred seventy-six thousand, twenty-one".