63676866 has 128 divisors (see below), whose sum is σ = 161740800. Its totient is φ = 16450560.

The previous prime is 63676861. The next prime is 63676897. The reversal of 63676866 is 66867636.

It is a happy number.

63676866 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (63676861) 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 63 ways as a sum of consecutive naturals, for example, 618171 + ... + 618273.

It is an arithmetic number, because the mean of its divisors is an integer number (1263600).

Almost surely, 2^63676866 is an apocalyptic number.

63676866 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 63676866, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80870400).

63676866 is an abundant number, since it is smaller than the sum of its proper divisors (98063934).

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

63676866 is a wasteful number, since it uses less digits than its factorization.

63676866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184.

The product of its digits is 1306368, while the sum is 48.

The square root of 63676866 is about 7979.7785683564. The cubic root of 63676866 is about 399.3256679964.

The spelling of 63676866 in words is "sixty-three million, six hundred seventy-six thousand, eight hundred sixty-six".