63977056 has 144 divisors (see below), whose sum is σ = 157659264. Its totient is φ = 25344000.

The previous prime is 63977041. The next prime is 63977057. The reversal of 63977056 is 65077936.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63977057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1560396 + ... + 1560436.

It is an arithmetic number, because the mean of its divisors is an integer number (1094856).

Almost surely, 2^63977056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63977056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78829632).

63977056 is an abundant number, since it is smaller than the sum of its proper divisors (93682208).

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

63977056 is a wasteful number, since it uses less digits than its factorization.

63977056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117 (or 98 counting only the distinct ones).

The product of its (nonzero) digits is 238140, while the sum is 43.

The square root of 63977056 is about 7998.5658714547. The cubic root of 63977056 is about 399.9521942868.

The spelling of 63977056 in words is "sixty-three million, nine hundred seventy-seven thousand, fifty-six".