620661522 has 32 divisors (see below), whose sum is σ = 1338277248. Its totient is φ = 190763136.

The previous prime is 620661511. The next prime is 620661529. The reversal of 620661522 is 225166026.

620661522 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 620661522.

It is not an unprimeable number, because it can be changed into a prime (620661529) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76723 + ... + 84425.

It is an arithmetic number, because the mean of its divisors is an integer number (41821164).

Almost surely, 2^620661522 is an apocalyptic number.

620661522 is an abundant number, since it is smaller than the sum of its proper divisors (717615726).

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

620661522 is a wasteful number, since it uses less digits than its factorization.

620661522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8754.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 620661522 is about 24913.0793359633. The cubic root of 620661522 is about 853.0050599221.

The spelling of 620661522 in words is "six hundred twenty million, six hundred sixty-one thousand, five hundred twenty-two".