63199920 has 80 divisors (see below), whose sum is σ = 223914240. Its totient is φ = 14445312.

The previous prime is 63199919. The next prime is 63199937. The reversal of 63199920 is 2999136.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17130 + ... + 20489.

It is an arithmetic number, because the mean of its divisors is an integer number (2798928).

Almost surely, 2^63199920 is an apocalyptic number.

63199920 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

63199920 is an abundant number, since it is smaller than the sum of its proper divisors (160714320).

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

63199920 is a wasteful number, since it uses less digits than its factorization.

63199920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37642 (or 37636 counting only the distinct ones).

The product of its (nonzero) digits is 26244, while the sum is 39.

The square root of 63199920 is about 7949.8377341931. The cubic root of 63199920 is about 398.3261721877.

The spelling of 63199920 in words is "sixty-three million, one hundred ninety-nine thousand, nine hundred twenty".