86625513 has 30 divisors (see below), whose sum is σ = 135954754. Its totient is φ = 53149824.

The previous prime is 86625509. The next prime is 86625527. The reversal of 86625513 is 31552668.

86625513 is a `hidden beast` number, since 86 + 62 + 5 + 513 = 666.

It can be written as a sum of positive squares in 5 ways, for example, as 80138304 + 6487209 = 8952^2 + 2547^2 .

It is not a de Polignac number, because 86625513 - 2² = 86625509 is a prime.

It is not an unprimeable number, because it can be changed into a prime (86625533) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 256881 + ... + 257217.

Almost surely, 2^86625513 is an apocalyptic number.

It is an amenable number.

86625513 is a deficient number, since it is larger than the sum of its proper divisors (49329241).

86625513 is an equidigital number, since it uses as much as digits as its factorization.

86625513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395 (or 353 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 86625513 is about 9307.2827935977. The cubic root of 86625513 is about 442.4680739199.

The spelling of 86625513 in words is "eighty-six million, six hundred twenty-five thousand, five hundred thirteen".