87864659 has 2 divisors, whose sum is σ = 87864660. Its totient is φ = 87864658.

The previous prime is 87864641. The next prime is 87864691. The reversal of 87864659 is 95646878.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87864659 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87864659.

It is not a weakly prime, because it can be changed into another prime (87864059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43932329 + 43932330.

It is an arithmetic number, because the mean of its divisors is an integer number (43932330).

Almost surely, 2^87864659 is an apocalyptic number.

87864659 is a deficient number, since it is larger than the sum of its proper divisors (1).

87864659 is an equidigital number, since it uses as much as digits as its factorization.

87864659 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2903040, while the sum is 53.

The square root of 87864659 is about 9373.6150443679. The cubic root of 87864659 is about 444.5678740772.

The spelling of 87864659 in words is "eighty-seven million, eight hundred sixty-four thousand, six hundred fifty-nine".