623904453 has 12 divisors (see below), whose sum is σ = 901939948. Its totient is φ = 415592640.

The previous prime is 623904433. The next prime is 623904473. The reversal of 623904453 is 354409326.

It is an interprime number because it is at equal distance from previous prime (623904433) and next prime (623904473).

It can be written as a sum of positive squares in 2 ways, for example, as 472540644 + 151363809 = 21738^2 + 12303^2 .

It is not a de Polignac number, because 623904453 - 2¹⁰ = 623903429 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 (623904433) 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 11 ways as a sum of consecutive naturals, for example, 16888 + ... + 39153.

Almost surely, 2^623904453 is an apocalyptic number.

It is an amenable number.

623904453 is a deficient number, since it is larger than the sum of its proper divisors (278035495).

623904453 is a wasteful number, since it uses less digits than its factorization.

623904453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57284 (or 57281 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

The square root of 623904453 is about 24978.0794497896. The cubic root of 623904453 is about 854.4881187587.

The spelling of 623904453 in words is "six hundred twenty-three million, nine hundred four thousand, four hundred fifty-three".