64455936 has 144 divisors (see below), whose sum is σ = 185431680. Its totient is φ = 19824640.

The previous prime is 64455917. The next prime is 64455949. The reversal of 64455936 is 63955446.

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 15 ways as a sum of consecutive naturals, for example, 724180 + ... + 724268.

It is an arithmetic number, because the mean of its divisors is an integer number (1287720).

Almost surely, 2^64455936 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 64455936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92715840).

64455936 is an abundant number, since it is smaller than the sum of its proper divisors (120975744).

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

64455936 is a wasteful number, since it uses less digits than its factorization.

64455936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172 (or 158 counting only the distinct ones).

The product of its digits is 388800, while the sum is 42.

The square root of 64455936 is about 8028.4454285995. The cubic root of 64455936 is about 400.9476199350.

The spelling of 64455936 in words is "sixty-four million, four hundred fifty-five thousand, nine hundred thirty-six".