623568961 has 8 divisors (see below), whose sum is σ = 658342880. Its totient is φ = 588990528.

The previous prime is 623568947. The next prime is 623568971. The reversal of 623568961 is 169865326.

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 623568961 - 2⁷ = 623568833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (623568941) 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, 42291 + ... + 55096.

It is an arithmetic number, because the mean of its divisors is an integer number (82292860).

Almost surely, 2^623568961 is an apocalyptic number.

It is an amenable number.

623568961 is a deficient number, since it is larger than the sum of its proper divisors (34773919).

623568961 is a wasteful number, since it uses less digits than its factorization.

623568961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97743.

The product of its digits is 466560, while the sum is 46.

The square root of 623568961 is about 24971.3628182364. The cubic root of 623568961 is about 854.3349300632.

It can be divided in two parts, 62356 and 8961, that added together give a palindrome (71317).

The spelling of 623568961 in words is "six hundred twenty-three million, five hundred sixty-eight thousand, nine hundred sixty-one".