623655396 has 384 divisors, whose sum is σ = 2167603200. Its totient is φ = 150543360.

The previous prime is 623655379. The next prime is 623655413. The reversal of 623655396 is 693556326.

623655396 is a `hidden beast` number, since 6 + 2 + 3 + 6 + 553 + 96 = 666.

It is an interprime number because it is at equal distance from previous prime (623655379) and next prime (623655413).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 7007320 + ... + 7007408.

It is an arithmetic number, because the mean of its divisors is an integer number (5644800).

Almost surely, 2^623655396 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 623655396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1083801600).

623655396 is an abundant number, since it is smaller than the sum of its proper divisors (1543947804).

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

623655396 is a wasteful number, since it uses less digits than its factorization.

623655396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176 (or 168 counting only the distinct ones).

The product of its digits is 874800, while the sum is 45.

The square root of 623655396 is about 24973.0934407414. The cubic root of 623655396 is about 854.3744023230.

The spelling of 623655396 in words is "six hundred twenty-three million, six hundred fifty-five thousand, three hundred ninety-six".