623868775 has 6 divisors (see below), whose sum is σ = 773597312. Its totient is φ = 499095000.

The previous prime is 623868733. The next prime is 623868779. The reversal of 623868775 is 577868326.

It is not a de Polignac number, because 623868775 - 2¹⁷ = 623737703 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 (623868779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12477351 + ... + 12477400.

Almost surely, 2^623868775 is an apocalyptic number.

623868775 is a deficient number, since it is larger than the sum of its proper divisors (149728537).

623868775 is a wasteful number, since it uses less digits than its factorization.

623868775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24954761 (or 24954756 counting only the distinct ones).

The product of its digits is 3386880, while the sum is 52.

The square root of 623868775 is about 24977.3652533649. The cubic root of 623868775 is about 854.4718304696.

The spelling of 623868775 in words is "six hundred twenty-three million, eight hundred sixty-eight thousand, seven hundred seventy-five".