623497423 has 4 divisors (see below), whose sum is σ = 660173760. Its totient is φ = 586821088.

The previous prime is 623497417. The next prime is 623497489. The reversal of 623497423 is 324794326.

623497423 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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-623497423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623497493) 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, 18338143 + ... + 18338176.

It is an arithmetic number, because the mean of its divisors is an integer number (165043440).

Almost surely, 2^623497423 is an apocalyptic number.

623497423 is a deficient number, since it is larger than the sum of its proper divisors (36676337).

623497423 is a wasteful number, since it uses less digits than its factorization.

623497423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36676336.

The product of its digits is 217728, while the sum is 40.

The square root of 623497423 is about 24969.9303763547. The cubic root of 623497423 is about 854.3022580556.

The spelling of 623497423 in words is "six hundred twenty-three million, four hundred ninety-seven thousand, four hundred twenty-three".