63081172 has 72 divisors (see below), whose sum is σ = 142227008. Its totient is φ = 23950080.

The previous prime is 63081167. The next prime is 63081181. The reversal of 63081172 is 27118036.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 63081172.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 145468 + ... + 145900.

Almost surely, 2^63081172 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 63081172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71113504).

63081172 is an abundant number, since it is smaller than the sum of its proper divisors (79145836).

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

63081172 is a wasteful number, since it uses less digits than its factorization.

63081172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509 (or 496 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 63081172 is about 7942.3656425526. The cubic root of 63081172 is about 398.0765405851.

The spelling of 63081172 in words is "sixty-three million, eighty-one thousand, one hundred seventy-two".