63947880 has 256 divisors, whose sum is σ = 233798400. Its totient is φ = 15676416.

The previous prime is 63947879. The next prime is 63947903. The reversal of 63947880 is 8874936.

It is a happy number.

63947880 is a `hidden beast` number, since 639 + 4 + 7 + 8 + 8 + 0 = 666.

It is a super-3 number, since 3×63947880³ (a number of 24 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a zygodrome in base 3.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1487139 + ... + 1487181.

It is an arithmetic number, because the mean of its divisors is an integer number (913275).

Almost surely, 2^63947880 is an apocalyptic number.

63947880 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 63947880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116899200).

63947880 is an abundant number, since it is smaller than the sum of its proper divisors (169850520).

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

63947880 is a wasteful number, since it uses less digits than its factorization.

63947880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92 (or 70 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 63947880 is about 7996.7418365232. The cubic root of 63947880 is about 399.8913871775.

The spelling of 63947880 in words is "sixty-three million, nine hundred forty-seven thousand, eight hundred eighty".