620972565 has 16 divisors (see below), whose sum is σ = 998604288. Its totient is φ = 329502656.

The previous prime is 620972519. The next prime is 620972567. The reversal of 620972565 is 565279026.

It is a cyclic number.

It is not a de Polignac number, because 620972565 - 2⁷ = 620972437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620972567) by changing a digit.

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, 102117 + ... + 108026.

It is an arithmetic number, because the mean of its divisors is an integer number (62412768).

Almost surely, 2^620972565 is an apocalyptic number.

It is an amenable number.

620972565 is a deficient number, since it is larger than the sum of its proper divisors (377631723).

620972565 is a wasteful number, since it uses less digits than its factorization.

620972565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210348.

The product of its (nonzero) digits is 226800, while the sum is 42.

The square root of 620972565 is about 24919.3211183612. The cubic root of 620972565 is about 853.1475299233.

The spelling of 620972565 in words is "six hundred twenty million, nine hundred seventy-two thousand, five hundred sixty-five".