64454856 has 32 divisors (see below), whose sum is σ = 162304800. Its totient is φ = 21330384.

The previous prime is 64454843. The next prime is 64454869. The reversal of 64454856 is 65845446.

It is an interprime number because it is at equal distance from previous prime (64454843) and next prime (64454869).

It is an ABA number since it can be written as A⋅B^A, here for A=3, B=278.

Its product of digits (460800) is a multiple of the sum of its prime divisors (144).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 463635 + ... + 463773.

It is an arithmetic number, because the mean of its divisors is an integer number (5072025).

Almost surely, 2^64454856 is an apocalyptic number.

It is an amenable number.

64454856 is an abundant number, since it is smaller than the sum of its proper divisors (97849944).

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

64454856 is an frugal number, since it uses more digits than its factorization.

64454856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426 (or 144 counting only the distinct ones).

The product of its digits is 460800, while the sum is 42.

The square root of 64454856 is about 8028.3781674757. The cubic root of 64454856 is about 400.9453805455.

The spelling of 64454856 in words is "sixty-four million, four hundred fifty-four thousand, eight hundred fifty-six".