63980280 has 480 divisors, whose sum is σ = 278087040. Its totient is φ = 13063680.

The previous prime is 63980263. The next prime is 63980297. The reversal of 63980280 is 8208936.

It is an interprime number because it is at equal distance from previous prime (63980263) and next prime (63980297).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 2063865 + ... + 2063895.

It is an arithmetic number, because the mean of its divisors is an integer number (579348).

Almost surely, 2^63980280 is an apocalyptic number.

63980280 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63980280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139043520).

63980280 is an abundant number, since it is smaller than the sum of its proper divisors (214106760).

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

63980280 is a wasteful number, since it uses less digits than its factorization.

63980280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81 (or 61 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 63980280 is about 7998.7674050444. The cubic root of 63980280 is about 399.9589124463.

The spelling of 63980280 in words is "sixty-three million, nine hundred eighty thousand, two hundred eighty".