620157 has 12 divisors (see below), whose sum is σ = 855456. Its totient is φ = 399600.

The previous prime is 620117. The next prime is 620159. The reversal of 620157 is 751026.

620157 is nontrivially palindromic in base 15.

It is not a de Polignac number, because 620157 - 2⁷ = 620029 is a prime.

It is the 788-th Hogben number.

620157 is a lucky number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 620157.

It is not an unprimeable number, because it can be changed into a prime (620159) by changing a digit.

It is a nontrivial repunit in base 787.

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 11 ways as a sum of consecutive naturals, for example, 4032 + ... + 4182.

It is an arithmetic number, because the mean of its divisors is an integer number (71288).

2⁶²⁰¹⁵⁷ is an apocalyptic number.

It is an amenable number.

620157 is a deficient number, since it is larger than the sum of its proper divisors (235299).

620157 is a wasteful number, since it uses less digits than its factorization.

620157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228 (or 191 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 620157 is about 787.5004761903. The cubic root of 620157 is about 85.2773867629.

It can be divided in two parts, 620 and 157, that added together give a palindrome (777).

The spelling of 620157 in words is "six hundred twenty thousand, one hundred fifty-seven".