520678704 has 120 divisors (see below), whose sum is σ = 1685152560. Its totient is φ = 137313792.

The previous prime is 520678693. The next prime is 520678723. The reversal of 520678704 is 407876025.

It is a super-2 number, since 2×520678704² = 542212625598239232, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22062 + ... + 39090.

It is an arithmetic number, because the mean of its divisors is an integer number (14042938).

Almost surely, 2^520678704 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 520678704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (842576280).

520678704 is an abundant number, since it is smaller than the sum of its proper divisors (1164473856).

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

520678704 is a wasteful number, since it uses less digits than its factorization.

520678704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17067 (or 17054 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 39.

The square root of 520678704 is about 22818.3852189413. The cubic root of 520678704 is about 804.4948563677.

The spelling of 520678704 in words is "five hundred twenty million, six hundred seventy-eight thousand, seven hundred four".