64003456 has 64 divisors (see below), whose sum is σ = 140564160. Its totient is φ = 28787200.

The previous prime is 64003399. The next prime is 64003463. The reversal of 64003456 is 65430046.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 184275 + ... + 184621.

It is an arithmetic number, because the mean of its divisors is an integer number (2196315).

Almost surely, 2^64003456 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64003456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70282080).

64003456 is an abundant number, since it is smaller than the sum of its proper divisors (76560704).

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

64003456 is a wasteful number, since it uses less digits than its factorization.

64003456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503 (or 491 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 64003456 is about 8000.2159970841. The cubic root of 64003456 is about 400.0071998704.

The spelling of 64003456 in words is "sixty-four million, three thousand, four hundred fifty-six".