623354900656 has 20 divisors (see below), whose sum is σ = 1207771178104. Its totient is φ = 311672016000.

The previous prime is 623354900653. The next prime is 623354900657. The reversal of 623354900656 is 656009453326.

It is not an unprimeable number, because it can be changed into a prime (623354900653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 703831 + ... + 1319881.

Almost surely, 2^623354900656 is an apocalyptic number.

It is an amenable number.

623354900656 is a deficient number, since it is larger than the sum of its proper divisors (584416277448).

623354900656 is a wasteful number, since it uses less digits than its factorization.

623354900656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 679300 (or 679294 counting only the distinct ones).

The product of its (nonzero) digits is 3499200, while the sum is 49.

The spelling of 623354900656 in words is "six hundred twenty-three billion, three hundred fifty-four million, nine hundred thousand, six hundred fifty-six".