679707702642 has 32 divisors (see below), whose sum is σ = 1366650806400. Its totient is φ = 225365944320.

The previous prime is 679707702631. The next prime is 679707702643. The reversal of 679707702642 is 246207707976.

It is a super-2 number, since 2×679707702642² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (679707702643) 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, 717234 + ... + 1368882.

It is an arithmetic number, because the mean of its divisors is an integer number (42707837700).

Almost surely, 2^679707702642 is an apocalyptic number.

679707702642 is an abundant number, since it is smaller than the sum of its proper divisors (686943103758).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

679707702642 is a wasteful number, since it uses less digits than its factorization.

679707702642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652578.

The product of its (nonzero) digits is 12446784, while the sum is 57.

The spelling of 679707702642 in words is "six hundred seventy-nine billion, seven hundred seven million, seven hundred two thousand, six hundred forty-two".