621160040 has 32 divisors (see below), whose sum is σ = 1411188480. Its totient is φ = 246050112.

The previous prime is 621160039. The next prime is 621160063. The reversal of 621160040 is 40061126.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 621159994 and 621160021.

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 7 ways as a sum of consecutive naturals, for example, 71264 + ... + 79503.

It is an arithmetic number, because the mean of its divisors is an integer number (44099640).

Almost surely, 2^621160040 is an apocalyptic number.

It is an amenable number.

621160040 is an abundant number, since it is smaller than the sum of its proper divisors (790028440).

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

621160040 is a wasteful number, since it uses less digits than its factorization.

621160040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150881 (or 150877 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 621160040 is about 24923.0824738835. The cubic root of 621160040 is about 853.2333779135.

The spelling of 621160040 in words is "six hundred twenty-one million, one hundred sixty thousand, forty".