63665166 has 32 divisors (see below), whose sum is σ = 130595328. Its totient is φ = 20681600.

The previous prime is 63665159. The next prime is 63665191. The reversal of 63665166 is 66156636.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112801 + ... + 113363.

It is an arithmetic number, because the mean of its divisors is an integer number (4081104).

Almost surely, 2^63665166 is an apocalyptic number.

63665166 is an abundant number, since it is smaller than the sum of its proper divisors (66930162).

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

63665166 is a wasteful number, since it uses less digits than its factorization.

63665166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1016.

The product of its digits is 116640, while the sum is 39.

The square root of 63665166 is about 7979.0454316290. The cubic root of 63665166 is about 399.3012091058.

The spelling of 63665166 in words is "sixty-three million, six hundred sixty-five thousand, one hundred sixty-six".