621148974 has 32 divisors (see below), whose sum is σ = 1255616640. Its totient is φ = 204842400.

The previous prime is 621148963. The next prime is 621148981. The reversal of 621148974 is 479841126.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 225244 + ... + 227984.

It is an arithmetic number, because the mean of its divisors is an integer number (39238020).

Almost surely, 2^621148974 is an apocalyptic number.

621148974 is an abundant number, since it is smaller than the sum of its proper divisors (634467666).

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

621148974 is a wasteful number, since it uses less digits than its factorization.

621148974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3136.

The product of its digits is 96768, while the sum is 42.

The square root of 621148974 is about 24922.8604698578. The cubic root of 621148974 is about 853.2283110837.

The spelling of 621148974 in words is "six hundred twenty-one million, one hundred forty-eight thousand, nine hundred seventy-four".