63656516 has 96 divisors (see below), whose sum is σ = 147087360. Its totient is φ = 23385600.

The previous prime is 63656513. The next prime is 63656519. The reversal of 63656516 is 61565636.

It is an interprime number because it is at equal distance from previous prime (63656513) and next prime (63656519).

Its product of digits (97200) is a multiple of the sum of its prime factors (225).

It is a self number, because there is not a number n which added to its sum of digits gives 63656516.

It is not an unprimeable number, because it can be changed into a prime (63656513) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 563276 + ... + 563388.

It is an arithmetic number, because the mean of its divisors is an integer number (1532160).

Almost surely, 2^63656516 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 63656516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73543680).

63656516 is an abundant number, since it is smaller than the sum of its proper divisors (83430844).

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

63656516 is a wasteful number, since it uses less digits than its factorization.

63656516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225 (or 223 counting only the distinct ones).

The product of its digits is 97200, while the sum is 38.

The square root of 63656516 is about 7978.5033684269. The cubic root of 63656516 is about 399.2831243240.

The spelling of 63656516 in words is "sixty-three million, six hundred fifty-six thousand, five hundred sixteen".