679052646 has 60 divisors (see below), whose sum is σ = 1558476612. Its totient is φ = 220989384.

The previous prime is 679052629. The next prime is 679052651. The reversal of 679052646 is 646250976.

It is a super-2 number, since 2×679052646² = 922224992079202632, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 298405 + ... + 300671.

Almost surely, 2^679052646 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 679052646, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (779238306).

679052646 is an abundant number, since it is smaller than the sum of its proper divisors (879423966).

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

679052646 is a wasteful number, since it uses less digits than its factorization.

679052646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2367 (or 2315 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 45.

The square root of 679052646 is about 26058.6386060362. The cubic root of 679052646 is about 878.9573765864.

The spelling of 679052646 in words is "six hundred seventy-nine million, fifty-two thousand, six hundred forty-six".