621348772 has 24 divisors (see below), whose sum is σ = 1237787712. Its totient is φ = 270151200.

The previous prime is 621348769. The next prime is 621348799. The reversal of 621348772 is 277843126.

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, 305979 + ... + 308002.

It is an arithmetic number, because the mean of its divisors is an integer number (51574488).

Almost surely, 2^621348772 is an apocalyptic number.

It is an amenable number.

621348772 is a deficient number, since it is larger than the sum of its proper divisors (616438940).

621348772 is a wasteful number, since it uses less digits than its factorization.

621348772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 614019 (or 614017 counting only the distinct ones).

The product of its digits is 112896, while the sum is 40.

The square root of 621348772 is about 24926.8684756028. The cubic root of 621348772 is about 853.3197840595.

The spelling of 621348772 in words is "six hundred twenty-one million, three hundred forty-eight thousand, seven hundred seventy-two".