641370474 has 40 divisors (see below), whose sum is σ = 1461525120. Its totient is φ = 210163464.

The previous prime is 641370451. The next prime is 641370539. The reversal of 641370474 is 474073146.

It is a happy number.

641370474 is a `hidden beast` number, since 641 + 3 + 7 + 0 + 4 + 7 + 4 = 666.

It is a super-2 number, since 2×641370474² = 822712169837969352, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 23994 + ... + 43109.

It is an arithmetic number, because the mean of its divisors is an integer number (36538128).

Almost surely, 2^641370474 is an apocalyptic number.

641370474 is an abundant number, since it is smaller than the sum of its proper divisors (820154646).

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

641370474 is a wasteful number, since it uses less digits than its factorization.

641370474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67176 (or 67167 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 36.

The square root of 641370474 is about 25325.2931671086. The cubic root of 641370474 is about 862.3885617839.

The spelling of 641370474 in words is "six hundred forty-one million, three hundred seventy thousand, four hundred seventy-four".