87236623 has 2 divisors, whose sum is σ = 87236624. Its totient is φ = 87236622.

The previous prime is 87236603. The next prime is 87236627. The reversal of 87236623 is 32663278.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87236623 - 2⁹ = 87236111 is a prime.

It is a super-2 number, since 2×87236623² = 15220456784888258, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87236627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43618311 + 43618312.

It is an arithmetic number, because the mean of its divisors is an integer number (43618312).

Almost surely, 2^87236623 is an apocalyptic number.

87236623 is a deficient number, since it is larger than the sum of its proper divisors (1).

87236623 is an equidigital number, since it uses as much as digits as its factorization.

87236623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 37.

The square root of 87236623 is about 9340.0547642934. The cubic root of 87236623 is about 443.5061179757.

The spelling of 87236623 in words is "eighty-seven million, two hundred thirty-six thousand, six hundred twenty-three".