63664356 has 24 divisors (see below), whose sum is σ = 169771840. Its totient is φ = 18189792.

The previous prime is 63664343. The next prime is 63664357. The reversal of 63664356 is 65346636.

It is a happy number.

It is a zygodrome in base 5.

It is not an unprimeable number, because it can be changed into a prime (63664357) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 378871 + ... + 379038.

Almost surely, 2^63664356 is an apocalyptic number.

It is an amenable number.

63664356 is an abundant number, since it is smaller than the sum of its proper divisors (106107484).

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

63664356 is a wasteful number, since it uses less digits than its factorization.

63664356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 757923 (or 757921 counting only the distinct ones).

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

The square root of 63664356 is about 7978.9946735162. The cubic root of 63664356 is about 399.2995156871.

The spelling of 63664356 in words is "sixty-three million, six hundred sixty-four thousand, three hundred fifty-six".