621172374 has 16 divisors (see below), whose sum is σ = 1251284160. Its totient is φ = 205567560.

The previous prime is 621172369. The next prime is 621172393. The reversal of 621172374 is 473271126.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 371572 + ... + 373239.

It is an arithmetic number, because the mean of its divisors is an integer number (78205260).

Almost surely, 2^621172374 is an apocalyptic number.

621172374 is an abundant number, since it is smaller than the sum of its proper divisors (630111786).

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

621172374 is a wasteful number, since it uses less digits than its factorization.

621172374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 744955.

The product of its digits is 14112, while the sum is 33.

The square root of 621172374 is about 24923.3299139581. The cubic root of 621172374 is about 853.2390252562.

The spelling of 621172374 in words is "six hundred twenty-one million, one hundred seventy-two thousand, three hundred seventy-four".