623389684 has 24 divisors (see below), whose sum is σ = 1129534560. Its totient is φ = 300684384.

The previous prime is 623389673. The next prime is 623389687. The reversal of 623389684 is 486983326.

It is a happy number.

It is a super-2 number, since 2×623389684² = 777229396235239712, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623389687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 231007 + ... + 233689.

It is an arithmetic number, because the mean of its divisors is an integer number (47063940).

Almost surely, 2^623389684 is an apocalyptic number.

It is an amenable number.

623389684 is a deficient number, since it is larger than the sum of its proper divisors (506144876).

623389684 is a wasteful number, since it uses less digits than its factorization.

623389684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4719 (or 4717 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 49.

The square root of 623389684 is about 24967.7729082912. The cubic root of 623389684 is about 854.2530480297.

The spelling of 623389684 in words is "six hundred twenty-three million, three hundred eighty-nine thousand, six hundred eighty-four".