63995880 has 64 divisors (see below), whose sum is σ = 206760960. Its totient is φ = 15752448.

The previous prime is 63995879. The next prime is 63995881. The reversal of 63995880 is 8859936.

It is an interprime number because it is at equal distance from previous prime (63995879) and next prime (63995881).

It is not an unprimeable number, because it can be changed into a prime (63995881) 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, 18952 + ... + 22071.

It is an arithmetic number, because the mean of its divisors is an integer number (3230640).

Almost surely, 2^63995880 is an apocalyptic number.

63995880 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

63995880 is an abundant number, since it is smaller than the sum of its proper divisors (142765080).

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

63995880 is a wasteful number, since it uses less digits than its factorization.

63995880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41050 (or 41046 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 48.

The square root of 63995880 is about 7999.7424958557. The cubic root of 63995880 is about 399.9914164825.

The spelling of 63995880 in words is "sixty-three million, nine hundred ninety-five thousand, eight hundred eighty".