520990704 has 300 divisors, whose sum is σ = 1741154184. Its totient is φ = 149465088.

The previous prime is 520990699. The next prime is 520990739. The reversal of 520990704 is 407099025.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 4869019 + ... + 4869125.

Almost surely, 2^520990704 is an apocalyptic number.

520990704 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 520990704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (870577092).

520990704 is an abundant number, since it is smaller than the sum of its proper divisors (1220163480).

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

520990704 is a wasteful number, since it uses less digits than its factorization.

520990704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174 (or 142 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 520990704 is about 22825.2207875411. The cubic root of 520990704 is about 804.6555135222.

The spelling of 520990704 in words is "five hundred twenty million, nine hundred ninety thousand, seven hundred four".