6646500432 has 120 divisors (see below), whose sum is σ = 21852955488. Its totient is φ = 1859155200.

The previous prime is 6646500359. The next prime is 6646500461. The reversal of 6646500432 is 2340056466.

6646500432 is a `hidden beast` number, since 6 + 646 + 5 + 0 + 0 + 4 + 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, 140794 + ... + 181977.

Almost surely, 2^6646500432 is an apocalyptic number.

It is an amenable number.

6646500432 is an abundant number, since it is smaller than the sum of its proper divisors (15206455056).

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

6646500432 is a wasteful number, since it uses less digits than its factorization.

6646500432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322809 (or 322800 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

The square root of 6646500432 is about 81526.0720996664. The cubic root of 6646500432 is about 1880.1724257124.

Adding to 6646500432 its reverse (2340056466), we get a palindrome (8986556898).

The spelling of 6646500432 in words is "six billion, six hundred forty-six million, five hundred thousand, four hundred thirty-two".