679369994 has 4 divisors (see below), whose sum is σ = 1019054994. Its totient is φ = 339684996.

The previous prime is 679369981. The next prime is 679370089. The reversal of 679369994 is 499963976.

679369994 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 508728025 + 170641969 = 22555^2 + 13063^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 169842497 + ... + 169842500.

Almost surely, 2^679369994 is an apocalyptic number.

679369994 is a deficient number, since it is larger than the sum of its proper divisors (339685000).

679369994 is a wasteful number, since it uses less digits than its factorization.

679369994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339684999.

The product of its digits is 19840464, while the sum is 62.

The square root of 679369994 is about 26064.7270079700. The cubic root of 679369994 is about 879.0942790421.

The spelling of 679369994 in words is "six hundred seventy-nine million, three hundred sixty-nine thousand, nine hundred ninety-four".