679993971 has 16 divisors (see below), whose sum is σ = 913449600. Its totient is φ = 449944128.

The previous prime is 679993967. The next prime is 679993981. The reversal of 679993971 is 179399976.

679993971 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 679993971 - 2² = 679993967 is a prime.

It is not an unprimeable number, because it can be changed into a prime (679993981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 421815 + ... + 423423.

It is an arithmetic number, because the mean of its divisors is an integer number (57090600).

Almost surely, 2^679993971 is an apocalyptic number.

679993971 is a deficient number, since it is larger than the sum of its proper divisors (233455629).

679993971 is a wasteful number, since it uses less digits than its factorization.

679993971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2578.

The product of its digits is 5786802, while the sum is 60.

The square root of 679993971 is about 26076.6940197564. The cubic root of 679993971 is about 879.3633355528.

The spelling of 679993971 in words is "six hundred seventy-nine million, nine hundred ninety-three thousand, nine hundred seventy-one".