86624513 has 4 divisors (see below), whose sum is σ = 88737348. Its totient is φ = 84511680.

The previous prime is 86624497. The next prime is 86624519. The reversal of 86624513 is 31542668.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 48888064 + 37736449 = 6992^2 + 6143^2 .

It is a cyclic number.

It is not a de Polignac number, because 86624513 - 2⁴ = 86624497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86624519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1056356 + ... + 1056437.

It is an arithmetic number, because the mean of its divisors is an integer number (22184337).

Almost surely, 2^86624513 is an apocalyptic number.

It is an amenable number.

86624513 is a deficient number, since it is larger than the sum of its proper divisors (2112835).

86624513 is a wasteful number, since it uses less digits than its factorization.

86624513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2112834.

The product of its digits is 34560, while the sum is 35.

The square root of 86624513 is about 9307.2290720708. The cubic root of 86624513 is about 442.4663713046.

The spelling of 86624513 in words is "eighty-six million, six hundred twenty-four thousand, five hundred thirteen".