63355992 has 64 divisors (see below), whose sum is σ = 182304000. Its totient is φ = 17973120.

The previous prime is 63355979. The next prime is 63355997. The reversal of 63355992 is 29955336.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63355997) 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, 23767 + ... + 26297.

It is an arithmetic number, because the mean of its divisors is an integer number (2848500).

Almost surely, 2^63355992 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 63355992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91152000).

63355992 is an abundant number, since it is smaller than the sum of its proper divisors (118948008).

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

63355992 is a wasteful number, since it uses less digits than its factorization.

63355992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2696 (or 2692 counting only the distinct ones).

The product of its digits is 218700, while the sum is 42.

The square root of 63355992 is about 7959.6477308986. The cubic root of 63355992 is about 398.6537910531.

The spelling of 63355992 in words is "sixty-three million, three hundred fifty-five thousand, nine hundred ninety-two".