679890432 has 160 divisors (see below), whose sum is σ = 1979873280. Its totient is φ = 206069760.

The previous prime is 679890397. The next prime is 679890457. The reversal of 679890432 is 234098976.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

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, 1577257 + ... + 1577687.

It is an arithmetic number, because the mean of its divisors is an integer number (12374208).

Almost surely, 2^679890432 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 679890432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (989936640).

679890432 is an abundant number, since it is smaller than the sum of its proper divisors (1299982848).

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

679890432 is a wasteful number, since it uses less digits than its factorization.

679890432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544 (or 528 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 48.

The square root of 679890432 is about 26074.7086656783. The cubic root of 679890432 is about 879.3187013228.

The spelling of 679890432 in words is "six hundred seventy-nine million, eight hundred ninety thousand, four hundred thirty-two".