621776272 has 20 divisors (see below), whose sum is σ = 1297360540. Its totient is φ = 286973568.

The previous prime is 621776261. The next prime is 621776293. The reversal of 621776272 is 272677126.

It can be written as a sum of positive squares in 2 ways, for example, as 377291776 + 244484496 = 19424^2 + 15636^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1494447 + ... + 1494862.

It is an arithmetic number, because the mean of its divisors is an integer number (64868027).

Almost surely, 2^621776272 is an apocalyptic number.

It is an amenable number.

621776272 is an abundant number, since it is smaller than the sum of its proper divisors (675584268).

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

621776272 is a wasteful number, since it uses less digits than its factorization.

621776272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2989330 (or 2989324 counting only the distinct ones).

The product of its digits is 98784, while the sum is 40.

The square root of 621776272 is about 24935.4420855135. The cubic root of 621776272 is about 853.5154393792.

The spelling of 621776272 in words is "six hundred twenty-one million, seven hundred seventy-six thousand, two hundred seventy-two".