620561572 has 12 divisors (see below), whose sum is σ = 1087650396. Its totient is φ = 309804320.

The previous prime is 620561569. The next prime is 620561581. The reversal of 620561572 is 275165026.

It can be written as a sum of positive squares in 2 ways, for example, as 48108096 + 572453476 = 6936^2 + 23926^2 .

It is a super-2 number, since 2×620561572² = 770193329286222368, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116179 + ... + 121402.

It is an arithmetic number, because the mean of its divisors is an integer number (90637533).

Almost surely, 2^620561572 is an apocalyptic number.

It is an amenable number.

620561572 is a deficient number, since it is larger than the sum of its proper divisors (467088824).

620561572 is a wasteful number, since it uses less digits than its factorization.

620561572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238238 (or 238236 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 620561572 is about 24911.0732807721. The cubic root of 620561572 is about 852.9592687623.

The spelling of 620561572 in words is "six hundred twenty million, five hundred sixty-one thousand, five hundred seventy-two".