87266579 has 2 divisors, whose sum is σ = 87266580. Its totient is φ = 87266578.

The previous prime is 87266561. The next prime is 87266587. The reversal of 87266579 is 97566278.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87266579 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (87266549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43633289 + 43633290.

It is an arithmetic number, because the mean of its divisors is an integer number (43633290).

Almost surely, 2^87266579 is an apocalyptic number.

87266579 is a deficient number, since it is larger than the sum of its proper divisors (1).

87266579 is an equidigital number, since it uses as much as digits as its factorization.

87266579 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1270080, while the sum is 50.

The square root of 87266579 is about 9341.6582575044. The cubic root of 87266579 is about 443.5568770429.

The spelling of 87266579 in words is "eighty-seven million, two hundred sixty-six thousand, five hundred seventy-nine".