623369 has 4 divisors (see below), whose sum is σ = 650496. Its totient is φ = 596244.

The previous prime is 623353. The next prime is 623383. The reversal of 623369 is 963326.

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 623369 - 2⁴ = 623353 is a prime.

It is a super-2 number, since 2×623369² = 777177820322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (623269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13529 + ... + 13574.

It is an arithmetic number, because the mean of its divisors is an integer number (162624).

2⁶²³³⁶⁹ is an apocalyptic number.

It is an amenable number.

623369 is a deficient number, since it is larger than the sum of its proper divisors (27127).

623369 is a wasteful number, since it uses less digits than its factorization.

623369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27126.

The product of its digits is 5832, while the sum is 29.

The square root of 623369 is about 789.5372062164. The cubic root of 623369 is about 85.4243599918.

The spelling of 623369 in words is "six hundred twenty-three thousand, three hundred sixty-nine".