64321456 has 40 divisors (see below), whose sum is σ = 129554208. Its totient is φ = 30912000.

The previous prime is 64321423. The next prime is 64321459. The reversal of 64321456 is 65412346.

It is not an unprimeable number, because it can be changed into a prime (64321459) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45886 + ... + 47266.

Almost surely, 2^64321456 is an apocalyptic number.

It is an amenable number.

64321456 is an abundant number, since it is smaller than the sum of its proper divisors (65232752).

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

64321456 is a wasteful number, since it uses less digits than its factorization.

64321456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1501 (or 1495 counting only the distinct ones).

The product of its digits is 17280, while the sum is 31.

The square root of 64321456 is about 8020.0658351413. The cubic root of 64321456 is about 400.6685818731.

The spelling of 64321456 in words is "sixty-four million, three hundred twenty-one thousand, four hundred fifty-six".