64440594 has 24 divisors (see below), whose sum is σ = 141590592. Its totient is φ = 21177240.

The previous prime is 64440559. The next prime is 64440601. The reversal of 64440594 is 49504446.

64440594 is a `hidden beast` number, since 64 + 4 + 4 + 0 + 594 = 666.

64440594 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 23934 + ... + 26489.

It is an arithmetic number, because the mean of its divisors is an integer number (5899608).

Almost surely, 2^64440594 is an apocalyptic number.

64440594 is an abundant number, since it is smaller than the sum of its proper divisors (77149998).

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

64440594 is a wasteful number, since it uses less digits than its factorization.

64440594 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50502 (or 50499 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The square root of 64440594 is about 8027.4898941076. The cubic root of 64440594 is about 400.9158058158.

The spelling of 64440594 in words is "sixty-four million, four hundred forty thousand, five hundred ninety-four".