87624413 has 2 divisors, whose sum is σ = 87624414. Its totient is φ = 87624412.

The previous prime is 87624391. The next prime is 87624431. The reversal of 87624413 is 31442678.

Together with next prime (87624431) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81685444 + 5938969 = 9038^2 + 2437^2 .

It is a cyclic number.

It is not a de Polignac number, because 87624413 - 2²⁴ = 70847197 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87624463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43812206 + 43812207.

It is an arithmetic number, because the mean of its divisors is an integer number (43812207).

Almost surely, 2^87624413 is an apocalyptic number.

It is an amenable number.

87624413 is a deficient number, since it is larger than the sum of its proper divisors (1).

87624413 is an equidigital number, since it uses as much as digits as its factorization.

87624413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32256, while the sum is 35.

The square root of 87624413 is about 9360.7912592900. The cubic root of 87624413 is about 444.1623141773.

The spelling of 87624413 in words is "eighty-seven million, six hundred twenty-four thousand, four hundred thirteen".