620854157 has 48 divisors (see below), whose sum is σ = 836625024. Its totient is φ = 454608000.

The previous prime is 620854141. The next prime is 620854159. The reversal of 620854157 is 751458026.

It is not a de Polignac number, because 620854157 - 2⁴ = 620854141 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 620854157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620854159) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 755807 + ... + 756627.

It is an arithmetic number, because the mean of its divisors is an integer number (17429688).

Almost surely, 2^620854157 is an apocalyptic number.

It is an amenable number.

620854157 is a deficient number, since it is larger than the sum of its proper divisors (215770867).

620854157 is a wasteful number, since it uses less digits than its factorization.

620854157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 930 (or 923 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 38.

The square root of 620854157 is about 24916.9451779306. The cubic root of 620854157 is about 853.0932999836.

The spelling of 620854157 in words is "six hundred twenty million, eight hundred fifty-four thousand, one hundred fifty-seven".