63618632 has 64 divisors (see below), whose sum is σ = 149990400. Its totient is φ = 24575040.

The previous prime is 63618623. The next prime is 63618637. The reversal of 63618632 is 23681636.

It is a junction number, because it is equal to n+sod(n) for n = 63618592 and 63618601.

It is not an unprimeable number, because it can be changed into a prime (63618637) 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, 85253 + ... + 85995.

It is an arithmetic number, because the mean of its divisors is an integer number (2343600).

Almost surely, 2^63618632 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 63618632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74995200).

63618632 is an abundant number, since it is smaller than the sum of its proper divisors (86371768).

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

63618632 is a wasteful number, since it uses less digits than its factorization.

63618632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 906 (or 902 counting only the distinct ones).

The product of its digits is 31104, while the sum is 35.

The square root of 63618632 is about 7976.1288856186. The cubic root of 63618632 is about 399.2038999462.

The spelling of 63618632 in words is "sixty-three million, six hundred eighteen thousand, six hundred thirty-two".