87930513 has 24 divisors (see below), whose sum is σ = 139432800. Its totient is φ = 52954560.

The previous prime is 87930503. The next prime is 87930517. The reversal of 87930513 is 31503978.

It is not a de Polignac number, because 87930513 - 2⁴ = 87930497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87930517) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13413 + ... + 18861.

It is an arithmetic number, because the mean of its divisors is an integer number (5809700).

Almost surely, 2^87930513 is an apocalyptic number.

It is an amenable number.

87930513 is a deficient number, since it is larger than the sum of its proper divisors (51502287).

87930513 is a wasteful number, since it uses less digits than its factorization.

87930513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5629 (or 5626 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 87930513 is about 9377.1271186862. The cubic root of 87930513 is about 444.6789132669.

The spelling of 87930513 in words is "eighty-seven million, nine hundred thirty thousand, five hundred thirteen".