679966671946 has 16 divisors (see below), whose sum is σ = 1023068891520. Its totient is φ = 338943890880.

The previous prime is 679966671929. The next prime is 679966671961. The reversal of 679966671946 is 649176669976.

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, 8662945 + ... + 8741083.

It is an arithmetic number, because the mean of its divisors is an integer number (63941805720).

Almost surely, 2^679966671946 is an apocalyptic number.

679966671946 is a deficient number, since it is larger than the sum of its proper divisors (343102219574).

679966671946 is a wasteful number, since it uses less digits than its factorization.

679966671946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91389.

The product of its digits is 1111065984, while the sum is 76.

The spelling of 679966671946 in words is "six hundred seventy-nine billion, nine hundred sixty-six million, six hundred seventy-one thousand, nine hundred forty-six".