623655605 has 8 divisors (see below), whose sum is σ = 749952000. Its totient is φ = 497880976.

The previous prime is 623655577. The next prime is 623655607. The reversal of 623655605 is 506556326.

623655605 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 623655605 - 2⁶ = 623655541 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623655607) 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, 127805 + ... + 132594.

It is an arithmetic number, because the mean of its divisors is an integer number (93744000).

Almost surely, 2^623655605 is an apocalyptic number.

It is an amenable number.

623655605 is a deficient number, since it is larger than the sum of its proper divisors (126296395).

623655605 is a wasteful number, since it uses less digits than its factorization.

623655605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260883.

The product of its (nonzero) digits is 162000, while the sum is 38.

The square root of 623655605 is about 24973.0976252447. The cubic root of 623655605 is about 854.3744977626.

The spelling of 623655605 in words is "six hundred twenty-three million, six hundred fifty-five thousand, six hundred five".