623671632 has 60 divisors (see below), whose sum is σ = 1751739444. Its totient is φ = 207137280.

The previous prime is 623671627. The next prime is 623671661. The reversal of 623671632 is 236176326.

It can be written as a sum of positive squares in 2 ways, for example, as 485937936 + 137733696 = 22044^2 + 11736^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 32758 + ... + 48170.

Almost surely, 2^623671632 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 623671632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (875869722).

623671632 is an abundant number, since it is smaller than the sum of its proper divisors (1128067812).

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

623671632 is a wasteful number, since it uses less digits than its factorization.

623671632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15708 (or 15699 counting only the distinct ones).

The product of its digits is 54432, while the sum is 36.

The square root of 623671632 is about 24973.4185084862. The cubic root of 623671632 is about 854.3818164080.

The spelling of 623671632 in words is "six hundred twenty-three million, six hundred seventy-one thousand, six hundred thirty-two".