679909921627 has 8 divisors (see below), whose sum is σ = 708281425280. Its totient is φ = 651940850880.

The previous prime is 679909921553. The next prime is 679909921637. The reversal of 679909921627 is 726129909976.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 679909921627 - 2²³ = 679901533019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (679909921637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100604778 + ... + 100611535.

It is an arithmetic number, because the mean of its divisors is an integer number (88535178160).

Almost surely, 2^679909921627 is an apocalyptic number.

679909921627 is a deficient number, since it is larger than the sum of its proper divisors (28371503653).

679909921627 is a wasteful number, since it uses less digits than its factorization.

679909921627 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201216453.

The product of its (nonzero) digits is 46294416, while the sum is 67.

The spelling of 679909921627 in words is "six hundred seventy-nine billion, nine hundred nine million, nine hundred twenty-one thousand, six hundred twenty-seven".