6455601644 has 12 divisors (see below), whose sum is σ = 11297925744. Its totient is φ = 3227622864.

The previous prime is 6455601629. The next prime is 6455601661. The reversal of 6455601644 is 4461065546.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69689 + ... + 133295.

It is an arithmetic number, because the mean of its divisors is an integer number (941493812).

Almost surely, 2^6455601644 is an apocalyptic number.

It is an amenable number.

6455601644 is a deficient number, since it is larger than the sum of its proper divisors (4842324100).

6455601644 is a wasteful number, since it uses less digits than its factorization.

6455601644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88984 (or 88982 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 41.

The square root of 6455601644 is about 80346.7587647442. The cubic root of 6455601644 is about 1861.9967038145.

The spelling of 6455601644 in words is "six billion, four hundred fifty-five million, six hundred one thousand, six hundred forty-four".