620168655 has 32 divisors (see below), whose sum is σ = 1026547200. Its totient is φ = 319462272.

The previous prime is 620168623. The next prime is 620168669. The reversal of 620168655 is 556861026.

It is not a de Polignac number, because 620168655 - 2⁵ = 620168623 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 73126 + ... + 81164.

It is an arithmetic number, because the mean of its divisors is an integer number (32079600).

Almost surely, 2^620168655 is an apocalyptic number.

620168655 is a deficient number, since it is larger than the sum of its proper divisors (406378545).

620168655 is a wasteful number, since it uses less digits than its factorization.

620168655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8223.

The product of its (nonzero) digits is 86400, while the sum is 39.

The square root of 620168655 is about 24903.1856395924. The cubic root of 620168655 is about 852.7792098338.

The spelling of 620168655 in words is "six hundred twenty million, one hundred sixty-eight thousand, six hundred fifty-five".