63669876 has 12 divisors (see below), whose sum is σ = 148563072. Its totient is φ = 21223288.

The previous prime is 63669869. The next prime is 63669887. The reversal of 63669876 is 67896636.

It is a tau number, because it is divible by the number of its divisors (12).

It is a nialpdrome in base 14.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2652900 + ... + 2652923.

It is an arithmetic number, because the mean of its divisors is an integer number (12380256).

Almost surely, 2^63669876 is an apocalyptic number.

It is an amenable number.

63669876 is an abundant number, since it is smaller than the sum of its proper divisors (84893196).

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

63669876 is a wasteful number, since it uses less digits than its factorization.

63669876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5305830 (or 5305828 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 51.

The square root of 63669876 is about 7979.3405742580. The cubic root of 63669876 is about 399.3110557374.

The spelling of 63669876 in words is "sixty-three million, six hundred sixty-nine thousand, eight hundred seventy-six".