87288623 has 2 divisors, whose sum is σ = 87288624. Its totient is φ = 87288622.

The previous prime is 87288613. The next prime is 87288647. The reversal of 87288623 is 32688278.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87288623 - 2⁸ = 87288367 is a prime.

It is a super-2 number, since 2×87288623² = 15238607410472258, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87288613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43644311 + 43644312.

It is an arithmetic number, because the mean of its divisors is an integer number (43644312).

Almost surely, 2^87288623 is an apocalyptic number.

87288623 is a deficient number, since it is larger than the sum of its proper divisors (1).

87288623 is an equidigital number, since it uses as much as digits as its factorization.

87288623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 258048, while the sum is 44.

The square root of 87288623 is about 9342.8380591767. The cubic root of 87288623 is about 443.5942221706.

The spelling of 87288623 in words is "eighty-seven million, two hundred eighty-eight thousand, six hundred twenty-three".