63172863 has 24 divisors (see below), whose sum is σ = 98690592. Its totient is φ = 38708928.

The previous prime is 63172847. The next prime is 63172919. The reversal of 63172863 is 36827136.

It is a happy number.

It is not a de Polignac number, because 63172863 - 2⁴ = 63172847 is a prime.

It is a zygodrome in base 2 and base 4.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63172163) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29745 + ... + 31797.

It is an arithmetic number, because the mean of its divisors is an integer number (4112108).

Almost surely, 2^63172863 is an apocalyptic number.

63172863 is a deficient number, since it is larger than the sum of its proper divisors (35517729).

63172863 is a wasteful number, since it uses less digits than its factorization.

63172863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2335 (or 2332 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 63172863 is about 7948.1358191717. The cubic root of 63172863 is about 398.2693205882.

Adding to 63172863 its reverse (36827136), we get a palindrome (99999999).

It can be divided in two parts, 6317 and 2863, that added together give a triangular number (9180 = T₁₃₅).

The spelling of 63172863 in words is "sixty-three million, one hundred seventy-two thousand, eight hundred sixty-three".