641047608 has 56 divisors (see below), whose sum is σ = 1802138400. Its totient is φ = 213680592.

The previous prime is 641047601. The next prime is 641047637. The reversal of 641047608 is 806740146.

641047608 is a `hidden beast` number, since 6 + 4 + 1 + 0 + 47 + 608 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641047601) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 49128 + ... + 60791.

Almost surely, 2^641047608 is an apocalyptic number.

It is an amenable number.

641047608 is an abundant number, since it is smaller than the sum of its proper divisors (1161090792).

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

641047608 is a wasteful number, since it uses less digits than its factorization.

641047608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109943 (or 109924 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 641047608 is about 25318.9179863595. The cubic root of 641047608 is about 862.2438286479.

The spelling of 641047608 in words is "six hundred forty-one million, forty-seven thousand, six hundred eight".