63211988 has 12 divisors (see below), whose sum is σ = 126424032. Its totient is φ = 27090840.

The previous prime is 63211979. The next prime is 63211997. The reversal of 63211988 is 88911236.

It is an interprime number because it is at equal distance from previous prime (63211979) and next prime (63211997).

63211988 is an admirable number.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1128758 + ... + 1128813.

It is an arithmetic number, because the mean of its divisors is an integer number (10535336).

Almost surely, 2^63211988 is an apocalyptic number.

It is an amenable number.

63211988 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

63211988 is a wasteful number, since it uses less digits than its factorization.

63211988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2257582 (or 2257580 counting only the distinct ones).

The product of its digits is 20736, while the sum is 38.

The square root of 63211988 is about 7950.5967071661. The cubic root of 63211988 is about 398.3515239831.

The spelling of 63211988 in words is "sixty-three million, two hundred eleven thousand, nine hundred eighty-eight".