647888468 has 24 divisors (see below), whose sum is σ = 1179623424. Its totient is φ = 311018400.

The previous prime is 647888453. The next prime is 647888471. The reversal of 647888468 is 864888746.

It is a happy number.

It is a congruent number.

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, 4823 + ... + 36318.

It is an arithmetic number, because the mean of its divisors is an integer number (49150976).

Almost surely, 2^647888468 is an apocalyptic number.

It is an amenable number.

647888468 is a deficient number, since it is larger than the sum of its proper divisors (531734956).

647888468 is a wasteful number, since it uses less digits than its factorization.

647888468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41303 (or 41301 counting only the distinct ones).

The product of its digits is 16515072, while the sum is 59.

The square root of 647888468 is about 25453.6533330679. The cubic root of 647888468 is about 865.3000921200.

The spelling of 647888468 in words is "six hundred forty-seven million, eight hundred eighty-eight thousand, four hundred sixty-eight".