64434456 has 24 divisors (see below), whose sum is σ = 174510180. Its totient is φ = 21478128.

The previous prime is 64434443. The next prime is 64434457. The reversal of 64434456 is 65443446.

64434456 is a `hidden beast` number, since 644 + 3 + 4 + 4 + 5 + 6 = 666.

64434456 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 64434456.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64434457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 447390 + ... + 447533.

Almost surely, 2^64434456 is an apocalyptic number.

It is an amenable number.

64434456 is an abundant number, since it is smaller than the sum of its proper divisors (110075724).

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

64434456 is a wasteful number, since it uses less digits than its factorization.

64434456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 894935 (or 894928 counting only the distinct ones).

The product of its digits is 138240, while the sum is 36.

The square root of 64434456 is about 8027.1075737155. The cubic root of 64434456 is about 400.9030762654.

The spelling of 64434456 in words is "sixty-four million, four hundred thirty-four thousand, four hundred fifty-six".