679251487 has 2 divisors, whose sum is σ = 679251488. Its totient is φ = 679251486.

The previous prime is 679251451. The next prime is 679251527. The reversal of 679251487 is 784152976.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 679251487 - 2⁷ = 679251359 is a prime.

It is a super-2 number, since 2×679251487² = 922765165183422338, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 679251487.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (679251407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339625743 + 339625744.

It is an arithmetic number, because the mean of its divisors is an integer number (339625744).

Almost surely, 2^679251487 is an apocalyptic number.

679251487 is a deficient number, since it is larger than the sum of its proper divisors (1).

679251487 is an equidigital number, since it uses as much as digits as its factorization.

679251487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 846720, while the sum is 49.

The square root of 679251487 is about 26062.4535874886. The cubic root of 679251487 is about 879.0431606605.

The spelling of 679251487 in words is "six hundred seventy-nine million, two hundred fifty-one thousand, four hundred eighty-seven".