641379772 has 12 divisors (see below), whose sum is σ = 1224452376. Its totient is φ = 291536240.

The previous prime is 641379763. The next prime is 641379829. The reversal of 641379772 is 277973146.

It is a super-2 number, since 2×641379772² = 822736023861543968, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7288363 + ... + 7288450.

It is an arithmetic number, because the mean of its divisors is an integer number (102037698).

Almost surely, 2^641379772 is an apocalyptic number.

It is an amenable number.

641379772 is a deficient number, since it is larger than the sum of its proper divisors (583072604).

641379772 is a wasteful number, since it uses less digits than its factorization.

641379772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14576828 (or 14576826 counting only the distinct ones).

The product of its digits is 444528, while the sum is 46.

The square root of 641379772 is about 25325.4767378622. The cubic root of 641379772 is about 862.3927291361.

The spelling of 641379772 in words is "six hundred forty-one million, three hundred seventy-nine thousand, seven hundred seventy-two".