623366609 has 4 divisors (see below), whose sum is σ = 629418816. Its totient is φ = 617314404.

The previous prime is 623366599. The next prime is 623366651. The reversal of 623366609 is 906663326.

623366609 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 623366609 - 2¹² = 623362513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (623366209) 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, 3025949 + ... + 3026154.

It is an arithmetic number, because the mean of its divisors is an integer number (157354704).

Almost surely, 2^623366609 is an apocalyptic number.

It is an amenable number.

623366609 is a deficient number, since it is larger than the sum of its proper divisors (6052207).

623366609 is a wasteful number, since it uses less digits than its factorization.

623366609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6052206.

The product of its (nonzero) digits is 209952, while the sum is 41.

The square root of 623366609 is about 24967.3108083350. The cubic root of 623366609 is about 854.2425077353.

The spelling of 623366609 in words is "six hundred twenty-three million, three hundred sixty-six thousand, six hundred nine".