579779920 has 20 divisors (see below), whose sum is σ = 1347988500. Its totient is φ = 231911936.

The previous prime is 579779911. The next prime is 579779939. The reversal of 579779920 is 29977975.

It can be written as a sum of positive squares in 2 ways, for example, as 176252176 + 403527744 = 13276^2 + 20088^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×579779920² = 672289511270412800, which 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 3 ways as a sum of consecutive naturals, for example, 3623545 + ... + 3623704.

It is an arithmetic number, because the mean of its divisors is an integer number (67399425).

Almost surely, 2^579779920 is an apocalyptic number.

It is an amenable number.

579779920 is an abundant number, since it is smaller than the sum of its proper divisors (768208580).

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

579779920 is a wasteful number, since it uses less digits than its factorization.

579779920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7247262 (or 7247256 counting only the distinct ones).

The product of its (nonzero) digits is 2500470, while the sum is 55.

The square root of 579779920 is about 24078.6195617606. The cubic root of 579779920 is about 833.8495972554.

The spelling of 579779920 in words is "five hundred seventy-nine million, seven hundred seventy-nine thousand, nine hundred twenty".