679997115 has 24 divisors (see below), whose sum is σ = 1347042528. Its totient is φ = 310855680.

The previous prime is 679997107. The next prime is 679997147. The reversal of 679997115 is 511799976.

It is a happy number.

It is not a de Polignac number, because 679997115 - 2³ = 679997107 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1079046 + ... + 1079675.

It is an arithmetic number, because the mean of its divisors is an integer number (56126772).

Almost surely, 2^679997115 is an apocalyptic number.

679997115 is a deficient number, since it is larger than the sum of its proper divisors (667045413).

679997115 is a wasteful number, since it uses less digits than its factorization.

679997115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2158739 (or 2158736 counting only the distinct ones).

The product of its digits is 1071630, while the sum is 54.

The square root of 679997115 is about 26076.7543034021. The cubic root of 679997115 is about 879.3646908168.

The spelling of 679997115 in words is "six hundred seventy-nine million, nine hundred ninety-seven thousand, one hundred fifteen".