679200466640 has 160 divisors (see below), whose sum is σ = 1627604326656. Its totient is φ = 263429304320.

The previous prime is 679200466589. The next prime is 679200466661. The reversal of 679200466640 is 46664002976.

It is a happy number.

It is a super-2 number, since 2×679200466640² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 584006699 + ... + 584007861.

Almost surely, 2^679200466640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 679200466640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (813802163328).

679200466640 is an abundant number, since it is smaller than the sum of its proper divisors (948403860016).

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

679200466640 is a wasteful number, since it uses less digits than its factorization.

679200466640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2157 (or 2151 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 50.

The spelling of 679200466640 in words is "six hundred seventy-nine billion, two hundred million, four hundred sixty-six thousand, six hundred forty".