64363656 has 96 divisors (see below), whose sum is σ = 188784000. Its totient is φ = 18232704.

The previous prime is 64363639. The next prime is 64363667. The reversal of 64363656 is 65636346.

It is a happy number.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

Its product of digits (233280) is a multiple of the sum of its prime divisors (480).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 269185 + ... + 269423.

It is an arithmetic number, because the mean of its divisors is an integer number (1966500).

Almost surely, 2^64363656 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 64363656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94392000).

64363656 is an abundant number, since it is smaller than the sum of its proper divisors (124420344).

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

64363656 is a wasteful number, since it uses less digits than its factorization.

64363656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491 (or 480 counting only the distinct ones).

The product of its digits is 233280, while the sum is 39.

The square root of 64363656 is about 8022.6963048591. The cubic root of 64363656 is about 400.7561862218.

The spelling of 64363656 in words is "sixty-four million, three hundred sixty-three thousand, six hundred fifty-six".