641817676 has 24 divisors (see below), whose sum is σ = 1199399040. Its totient is φ = 299846400.

The previous prime is 641817667. The next prime is 641817721. The reversal of 641817676 is 676718146.

It is a hoax number, since the sum of its digits (46) 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 7 ways as a sum of consecutive naturals, for example, 85645 + ... + 92836.

It is an arithmetic number, because the mean of its divisors is an integer number (49974960).

Almost surely, 2^641817676 is an apocalyptic number.

It is an amenable number.

641817676 is a deficient number, since it is larger than the sum of its proper divisors (557581364).

641817676 is a wasteful number, since it uses less digits than its factorization.

641817676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178545 (or 178543 counting only the distinct ones).

The product of its digits is 338688, while the sum is 46.

The square root of 641817676 is about 25334.1207860072. The cubic root of 641817676 is about 862.5889515764.

The spelling of 641817676 in words is "six hundred forty-one million, eight hundred seventeen thousand, six hundred seventy-six".