620853540 has 48 divisors (see below), whose sum is σ = 1751682240. Its totient is φ = 164295040.

The previous prime is 620853521. The next prime is 620853551. The reversal of 620853540 is 45358026.

It is an unprimeable number.

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, 31635 + ... + 47354.

It is an arithmetic number, because the mean of its divisors is an integer number (36493380).

Almost surely, 2^620853540 is an apocalyptic number.

620853540 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

620853540 is an abundant number, since it is smaller than the sum of its proper divisors (1130828700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

620853540 is a wasteful number, since it uses less digits than its factorization.

620853540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79132 (or 79130 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 33.

The square root of 620853540 is about 24916.9327967950. The cubic root of 620853540 is about 853.0930173844.

The spelling of 620853540 in words is "six hundred twenty million, eight hundred fifty-three thousand, five hundred forty".