63966798 has 24 divisors (see below), whose sum is σ = 158394288. Its totient is φ = 18276192.

The previous prime is 63966769. The next prime is 63966803. The reversal of 63966798 is 89766936.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 253711 + ... + 253962.

It is an arithmetic number, because the mean of its divisors is an integer number (6599762).

Almost surely, 2^63966798 is an apocalyptic number.

63966798 is an abundant number, since it is smaller than the sum of its proper divisors (94427490).

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

63966798 is a wasteful number, since it uses less digits than its factorization.

63966798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507688 (or 507685 counting only the distinct ones).

The product of its digits is 2939328, while the sum is 54.

The square root of 63966798 is about 7997.9246057962. The cubic root of 63966798 is about 399.9308172017.

The spelling of 63966798 in words is "sixty-three million, nine hundred sixty-six thousand, seven hundred ninety-eight".