679185587 has 2 divisors, whose sum is σ = 679185588. Its totient is φ = 679185586.

The previous prime is 679185557. The next prime is 679185601. The reversal of 679185587 is 785581976.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 679185587 - 2⁶ = 679185523 is a prime.

It is a super-2 number, since 2×679185587² = 922586123177069138, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (679185527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339592793 + 339592794.

It is an arithmetic number, because the mean of its divisors is an integer number (339592794).

Almost surely, 2^679185587 is an apocalyptic number.

679185587 is a deficient number, since it is larger than the sum of its proper divisors (1).

679185587 is an equidigital number, since it uses as much as digits as its factorization.

679185587 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4233600, while the sum is 56.

The square root of 679185587 is about 26061.1892859862. The cubic root of 679185587 is about 879.0147319077.

The spelling of 679185587 in words is "six hundred seventy-nine million, one hundred eighty-five thousand, five hundred eighty-seven".