647650332 has 72 divisors (see below), whose sum is σ = 1873350752. Its totient is φ = 184809600.

The previous prime is 647650327. The next prime is 647650433. The reversal of 647650332 is 233056746.

647650332 is a `hidden beast` number, since 647 + 6 + 5 + 0 + 3 + 3 + 2 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 347082 + ... + 348942.

Almost surely, 2^647650332 is an apocalyptic number.

It is an amenable number.

647650332 is an abundant number, since it is smaller than the sum of its proper divisors (1225700420).

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

647650332 is a wasteful number, since it uses less digits than its factorization.

647650332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3259 (or 3254 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 36.

The square root of 647650332 is about 25448.9750677704. The cubic root of 647650332 is about 865.1940634005.

The spelling of 647650332 in words is "six hundred forty-seven million, six hundred fifty thousand, three hundred thirty-two".