63898992 has 120 divisors (see below), whose sum is σ = 186863040. Its totient is φ = 20367360.

The previous prime is 63898969. The next prime is 63898997. The reversal of 63898992 is 29989836.

63898992 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×63898992³ (a number of 24 digits) contains 333 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63898997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 466348 + ... + 466484.

It is an arithmetic number, because the mean of its divisors is an integer number (1557192).

Almost surely, 2^63898992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63898992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93431520).

63898992 is an abundant number, since it is smaller than the sum of its proper divisors (122964048).

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

63898992 is a wasteful number, since it uses less digits than its factorization.

63898992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271 (or 262 counting only the distinct ones).

The product of its digits is 1679616, while the sum is 54.

The square root of 63898992 is about 7993.6845071594. The cubic root of 63898992 is about 399.7894558640.

The spelling of 63898992 in words is "sixty-three million, eight hundred ninety-eight thousand, nine hundred ninety-two".