520622680 has 64 divisors (see below), whose sum is σ = 1221454080. Its totient is φ = 199488000.

The previous prime is 520622653. The next prime is 520622699. The reversal of 520622680 is 86226025.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123162 + ... + 127318.

It is an arithmetic number, because the mean of its divisors is an integer number (19085220).

Almost surely, 2^520622680 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 520622680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (610727040).

520622680 is an abundant number, since it is smaller than the sum of its proper divisors (700831400).

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

520622680 is a wasteful number, since it uses less digits than its factorization.

520622680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4300 (or 4296 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 520622680 is about 22817.1575793305. The cubic root of 520622680 is about 804.4660013137.

The spelling of 520622680 in words is "five hundred twenty million, six hundred twenty-two thousand, six hundred eighty".