656233663 has 8 divisors (see below), whose sum is σ = 685586880. Its totient is φ = 627328800.

The previous prime is 656233531. The next prime is 656233673. The reversal of 656233663 is 366332656.

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 656233663 - 2²⁵ = 622679231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656233673) 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, 109095 + ... + 114952.

It is an arithmetic number, because the mean of its divisors is an integer number (85698360).

Almost surely, 2^656233663 is an apocalyptic number.

656233663 is a deficient number, since it is larger than the sum of its proper divisors (29353217).

656233663 is a wasteful number, since it uses less digits than its factorization.

656233663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224177.

The product of its digits is 349920, while the sum is 40.

The square root of 656233663 is about 25617.0580473246. The cubic root of 656233663 is about 868.9994500066. Note that the first 3 decimals are identical.

The spelling of 656233663 in words is "six hundred fifty-six million, two hundred thirty-three thousand, six hundred sixty-three".