679933420 has 48 divisors (see below), whose sum is σ = 1499228640. Its totient is φ = 258660864.

The previous prime is 679933399. The next prime is 679933433. The reversal of 679933420 is 24339976.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30112 + ... + 47608.

It is an arithmetic number, because the mean of its divisors is an integer number (31233930).

Almost surely, 2^679933420 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 679933420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (749614320).

679933420 is an abundant number, since it is smaller than the sum of its proper divisors (819295220).

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

679933420 is a wasteful number, since it uses less digits than its factorization.

679933420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17602 (or 17600 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 43.

The square root of 679933420 is about 26075.5329763363. The cubic root of 679933420 is about 879.3372334047.

The spelling of 679933420 in words is "six hundred seventy-nine million, nine hundred thirty-three thousand, four hundred twenty".