679621329 has 12 divisors (see below), whose sum is σ = 982633600. Its totient is φ = 452638584.

The previous prime is 679621309. The next prime is 679621343. The reversal of 679621329 is 923126976.

It is a happy number.

It is not a de Polignac number, because 679621329 - 2⁵ = 679621297 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (679621309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26989 + ... + 45690.

Almost surely, 2^679621329 is an apocalyptic number.

It is an amenable number.

679621329 is a deficient number, since it is larger than the sum of its proper divisors (303012271).

679621329 is a wasteful number, since it uses less digits than its factorization.

679621329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73724 (or 73721 counting only the distinct ones).

The product of its digits is 244944, while the sum is 45.

The square root of 679621329 is about 26069.5479247339. The cubic root of 679621329 is about 879.2026735456.

The spelling of 679621329 in words is "six hundred seventy-nine million, six hundred twenty-one thousand, three hundred twenty-nine".