623330561 has 8 divisors (see below), whose sum is σ = 718914240. Its totient is φ = 529381008.

The previous prime is 623330557. The next prime is 623330563. The reversal of 623330561 is 165033326.

It is a happy number.

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 623330561 - 2² = 623330557 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (623330563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 407711 + ... + 409236.

It is an arithmetic number, because the mean of its divisors is an integer number (89864280).

Almost surely, 2^623330561 is an apocalyptic number.

It is an amenable number.

623330561 is a deficient number, since it is larger than the sum of its proper divisors (95583679).

623330561 is a wasteful number, since it uses less digits than its factorization.

623330561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 817063.

The product of its (nonzero) digits is 9720, while the sum is 29.

The square root of 623330561 is about 24966.5888939599. The cubic root of 623330561 is about 854.2260410596.

Adding to 623330561 its reverse (165033326), we get a palindrome (788363887).

The spelling of 623330561 in words is "six hundred twenty-three million, three hundred thirty thousand, five hundred sixty-one".