623213568 has 88 divisors (see below), whose sum is σ = 1845738960. Its totient is φ = 207728640.

The previous prime is 623213473. The next prime is 623213573. The reversal of 623213568 is 865312326.

It is a happy number.

623213568 is a `hidden beast` number, since 62 + 32 + 1 + 3 + 568 = 666.

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 (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16378 + ... + 38918.

Almost surely, 2^623213568 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 623213568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (922869480).

623213568 is an abundant number, since it is smaller than the sum of its proper divisors (1222525392).

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

623213568 is a wasteful number, since it uses less digits than its factorization.

623213568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22570 (or 22546 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 623213568 is about 24964.2457927333. The cubic root of 623213568 is about 854.1725944473.

The spelling of 623213568 in words is "six hundred twenty-three million, two hundred thirteen thousand, five hundred sixty-eight".