679886629 has 2 divisors, whose sum is σ = 679886630. Its totient is φ = 679886628.

The previous prime is 679886617. The next prime is 679886653. The reversal of 679886629 is 926688976.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 546484129 + 133402500 = 23377^2 + 11550^2 .

It is a cyclic number.

It is not a de Polignac number, because 679886629 - 2¹⁵ = 679853861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (679886609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339943314 + 339943315.

It is an arithmetic number, because the mean of its divisors is an integer number (339943315).

Almost surely, 2^679886629 is an apocalyptic number.

It is an amenable number.

679886629 is a deficient number, since it is larger than the sum of its proper divisors (1).

679886629 is an equidigital number, since it uses as much as digits as its factorization.

679886629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15676416, while the sum is 61.

The square root of 679886629 is about 26074.6357405046. The cubic root of 679886629 is about 879.3170618158.

The spelling of 679886629 in words is "six hundred seventy-nine million, eight hundred eighty-six thousand, six hundred twenty-nine".