86942513 has 6 divisors (see below), whose sum is σ = 101137266. Its totient is φ = 74522112.

The previous prime is 86942501. The next prime is 86942521. The reversal of 86942513 is 31524968.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 75463969 + 11478544 = 8687^2 + 3388^2 .

It is not a de Polignac number, because 86942513 - 2⁸ = 86942257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86942533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 887120 + ... + 887217.

It is an arithmetic number, because the mean of its divisors is an integer number (16856211).

Almost surely, 2^86942513 is an apocalyptic number.

It is an amenable number.

86942513 is a deficient number, since it is larger than the sum of its proper divisors (14194753).

86942513 is a wasteful number, since it uses less digits than its factorization.

86942513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1774351 (or 1774344 counting only the distinct ones).

The product of its digits is 51840, while the sum is 38.

The square root of 86942513 is about 9324.2969171943. The cubic root of 86942513 is about 443.0071438702.

The spelling of 86942513 in words is "eighty-six million, nine hundred forty-two thousand, five hundred thirteen".