64145968 has 20 divisors (see below), whose sum is σ = 124521048. Its totient is φ = 32011520.

The previous prime is 64145933. The next prime is 64145993. The reversal of 64145968 is 86954146.

It is a super-2 number, since 2×64145968² = 8229410421314048, which contains 22 as substring.

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, 5448 + ... + 12568.

Almost surely, 2^64145968 is an apocalyptic number.

It is an amenable number.

64145968 is a deficient number, since it is larger than the sum of its proper divisors (60375080).

64145968 is a wasteful number, since it uses less digits than its factorization.

64145968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7692 (or 7686 counting only the distinct ones).

The product of its digits is 207360, while the sum is 43.

The square root of 64145968 is about 8009.1178041030. The cubic root of 64145968 is about 400.3038691005.

The spelling of 64145968 in words is "sixty-four million, one hundred forty-five thousand, nine hundred sixty-eight".