6445968 has 20 divisors (see below), whose sum is σ = 16652208. Its totient is φ = 2148640.

The previous prime is 6445961. The next prime is 6445981. The reversal of 6445968 is 8695446.

It is not an unprimeable number, because it can be changed into a prime (6445961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67098 + ... + 67193.

Almost surely, 2^6445968 is an apocalyptic number.

It is an amenable number.

6445968 is an abundant number, since it is smaller than the sum of its proper divisors (10206240).

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

6445968 is a wasteful number, since it uses less digits than its factorization.

6445968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134302 (or 134296 counting only the distinct ones).

The product of its digits is 207360, while the sum is 42.

The square root of 6445968 is about 2538.8910965223. The cubic root of 6445968 is about 186.1070028317.

The spelling of 6445968 in words is "six million, four hundred forty-five thousand, nine hundred sixty-eight".