620670057 has 16 divisors (see below), whose sum is σ = 957757440. Its totient is φ = 350178192.

The previous prime is 620670049. The next prime is 620670091. The reversal of 620670057 is 750076026.

It is not a de Polignac number, because 620670057 - 2³ = 620670049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (620670097) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 185403 + ... + 188720.

It is an arithmetic number, because the mean of its divisors is an integer number (59859840).

Almost surely, 2^620670057 is an apocalyptic number.

It is an amenable number.

620670057 is a deficient number, since it is larger than the sum of its proper divisors (337087383).

620670057 is a wasteful number, since it uses less digits than its factorization.

620670057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374212.

The product of its (nonzero) digits is 17640, while the sum is 33.

The square root of 620670057 is about 24913.2506309394. The cubic root of 620670057 is about 853.0089699248.

The spelling of 620670057 in words is "six hundred twenty million, six hundred seventy thousand, fifty-seven".