641406374 has 24 divisors (see below), whose sum is σ = 1120133448. Its totient is φ = 274656480.

The previous prime is 641406347. The next prime is 641406377. The reversal of 641406374 is 473604146.

641406374 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×641406374² = 822804273215655752, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641406377) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 166757 + ... + 170559.

It is an arithmetic number, because the mean of its divisors is an integer number (46672227).

Almost surely, 2^641406374 is an apocalyptic number.

641406374 is a deficient number, since it is larger than the sum of its proper divisors (478727074).

641406374 is a wasteful number, since it uses less digits than its factorization.

641406374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5540 (or 5533 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 35.

The square root of 641406374 is about 25326.0019347705. The cubic root of 641406374 is about 862.4046518977.

The spelling of 641406374 in words is "six hundred forty-one million, four hundred six thousand, three hundred seventy-four".