87113623 has 2 divisors, whose sum is σ = 87113624. Its totient is φ = 87113622.

The previous prime is 87113603. The next prime is 87113629. The reversal of 87113623 is 32631178.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87113623 - 2⁵ = 87113591 is a prime.

It is a super-2 number, since 2×87113623² = 15177566624372258, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87113629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43556811 + 43556812.

It is an arithmetic number, because the mean of its divisors is an integer number (43556812).

Almost surely, 2^87113623 is an apocalyptic number.

87113623 is a deficient number, since it is larger than the sum of its proper divisors (1).

87113623 is an equidigital number, since it uses as much as digits as its factorization.

87113623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048, while the sum is 31.

The square root of 87113623 is about 9333.4678978395. The cubic root of 87113623 is about 443.2975782246.

The spelling of 87113623 in words is "eighty-seven million, one hundred thirteen thousand, six hundred twenty-three".