63977480 has 64 divisors (see below), whose sum is σ = 170208000. Its totient is φ = 21176064.

The previous prime is 63977449. The next prime is 63977483. The reversal of 63977480 is 8477936.

It is not an unprimeable number, because it can be changed into a prime (63977483) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4181 + ... + 12059.

It is an arithmetic number, because the mean of its divisors is an integer number (2659500).

Almost surely, 2^63977480 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 63977480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85104000).

63977480 is an abundant number, since it is smaller than the sum of its proper divisors (106230520).

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

63977480 is a wasteful number, since it uses less digits than its factorization.

63977480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7926 (or 7922 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 44.

The square root of 63977480 is about 7998.5923761622. The cubic root of 63977480 is about 399.9530778293.

The spelling of 63977480 in words is "sixty-three million, nine hundred seventy-seven thousand, four hundred eighty".