641785882 has 8 divisors (see below), whose sum is σ = 1004534496. Its totient is φ = 306941052.

The previous prime is 641785841. The next prime is 641785889. The reversal of 641785882 is 288587146.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (641785889) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6975888 + ... + 6975979.

It is an arithmetic number, because the mean of its divisors is an integer number (125566812).

Almost surely, 2^641785882 is an apocalyptic number.

641785882 is a deficient number, since it is larger than the sum of its proper divisors (362748614).

641785882 is a wasteful number, since it uses less digits than its factorization.

641785882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13951892.

The product of its digits is 860160, while the sum is 49.

The square root of 641785882 is about 25333.4932845828. The cubic root of 641785882 is about 862.5747078605.

The spelling of 641785882 in words is "six hundred forty-one million, seven hundred eighty-five thousand, eight hundred eighty-two".