63661602 has 16 divisors (see below), whose sum is σ = 130429152. Its totient is φ = 20702880.

The previous prime is 63661579. The next prime is 63661607. The reversal of 63661602 is 20616636.

63661602 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 63661602.

It is not an unprimeable number, because it can be changed into a prime (63661607) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 129148 + ... + 129639.

It is an arithmetic number, because the mean of its divisors is an integer number (8151822).

Almost surely, 2^63661602 is an apocalyptic number.

63661602 is an abundant number, since it is smaller than the sum of its proper divisors (66767550).

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

63661602 is a wasteful number, since it uses less digits than its factorization.

63661602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258833.

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 63661602 is about 7978.8220935173. The cubic root of 63661602 is about 399.2937579560.

The spelling of 63661602 in words is "sixty-three million, six hundred sixty-one thousand, six hundred two".