63689166 has 20 divisors (see below), whose sum is σ = 142711272. Its totient is φ = 21229668.

The previous prime is 63689161. The next prime is 63689177. The reversal of 63689166 is 66198636.

63689166 is a `hidden beast` number, since 636 + 8 + 9 + 1 + 6 + 6 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63689161) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 196410 + ... + 196733.

Almost surely, 2^63689166 is an apocalyptic number.

63689166 is an abundant number, since it is smaller than the sum of its proper divisors (79022106).

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

63689166 is a wasteful number, since it uses less digits than its factorization.

63689166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393157 (or 393148 counting only the distinct ones).

The product of its digits is 279936, while the sum is 45.

The square root of 63689166 is about 7980.5492292198. The cubic root of 63689166 is about 399.3513779588.

The spelling of 63689166 in words is "sixty-three million, six hundred eighty-nine thousand, one hundred sixty-six".