6464244400 has 30 divisors (see below), whose sum is σ = 15530348132. Its totient is φ = 2585697600.

The previous prime is 6464244361. The next prime is 6464244419. The reversal of 6464244400 is 44424646.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8079906 + ... + 8080705.

Almost surely, 2^6464244400 is an apocalyptic number.

It is an amenable number.

6464244400 is an abundant number, since it is smaller than the sum of its proper divisors (9066103732).

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

6464244400 is a wasteful number, since it uses less digits than its factorization.

6464244400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16160629 (or 16160618 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 34.

The square root of 6464244400 is about 80400.5248739086. The cubic root of 6464244400 is about 1862.8272799940.

The spelling of 6464244400 in words is "six billion, four hundred sixty-four million, two hundred forty-four thousand, four hundred".