679679788 has 24 divisors (see below), whose sum is σ = 1293449472. Its totient is φ = 311203584.

The previous prime is 679679717. The next prime is 679679827. The reversal of 679679788 is 887976976.

It is a super-2 number, since 2×679679788² = 923929228431449888, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132556 + ... + 137587.

It is an arithmetic number, because the mean of its divisors is an integer number (53893728).

Almost surely, 2^679679788 is an apocalyptic number.

679679788 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

679679788 is a deficient number, since it is larger than the sum of its proper divisors (613769684).

679679788 is a wasteful number, since it uses less digits than its factorization.

679679788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270201 (or 270199 counting only the distinct ones).

The product of its digits is 64012032, while the sum is 67.

The square root of 679679788 is about 26070.6691130090. The cubic root of 679679788 is about 879.2278816202.

The spelling of 679679788 in words is "six hundred seventy-nine million, six hundred seventy-nine thousand, seven hundred eighty-eight".