63777996 has 24 divisors (see below), whose sum is σ = 165350640. Its totient is φ = 21259296.

The previous prime is 63777979. The next prime is 63778009. The reversal of 63777996 is 69977736.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 295161 + ... + 295376.

It is an arithmetic number, because the mean of its divisors is an integer number (6889610).

Almost surely, 2^63777996 is an apocalyptic number.

It is an amenable number.

63777996 is an abundant number, since it is smaller than the sum of its proper divisors (101572644).

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

63777996 is a wasteful number, since it uses less digits than its factorization.

63777996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 590550 (or 590542 counting only the distinct ones).

The product of its digits is 3000564, while the sum is 54.

The square root of 63777996 is about 7986.1126964250. The cubic root of 63777996 is about 399.5369558488.

The spelling of 63777996 in words is "sixty-three million, seven hundred seventy-seven thousand, nine hundred ninety-six".