641702080 has 28 divisors (see below), whose sum is σ = 1528053840. Its totient is φ = 256680704.

The previous prime is 641702041. The next prime is 641702099. The reversal of 641702080 is 80207146.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1002340 + ... + 1002979.

Almost surely, 2^641702080 is an apocalyptic number.

It is an amenable number.

641702080 is an abundant number, since it is smaller than the sum of its proper divisors (886351760).

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

641702080 is a wasteful number, since it uses less digits than its factorization.

641702080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2005336 (or 2005326 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 641702080 is about 25331.8392541876. The cubic root of 641702080 is about 862.5371622999.

The spelling of 641702080 in words is "six hundred forty-one million, seven hundred two thousand, eighty".