520786004 has 6 divisors (see below), whose sum is σ = 911375514. Its totient is φ = 260393000.

The previous prime is 520785971. The next prime is 520786069. The reversal of 520786004 is 400687025.

It can be written as a sum of positive squares in only one way, i.e., 513113104 + 7672900 = 22652^2 + 2770^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65098247 + ... + 65098254.

It is an arithmetic number, because the mean of its divisors is an integer number (151895919).

Almost surely, 2^520786004 is an apocalyptic number.

It is an amenable number.

520786004 is a deficient number, since it is larger than the sum of its proper divisors (390589510).

520786004 is a wasteful number, since it uses less digits than its factorization.

520786004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130196505 (or 130196503 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 520786004 is about 22820.7362720838. The cubic root of 520786004 is about 804.5501152497.

The spelling of 520786004 in words is "five hundred twenty million, seven hundred eighty-six thousand, four".