623538887 has 4 divisors (see below), whose sum is σ = 623588880. Its totient is φ = 623488896.

The previous prime is 623538841. The next prime is 623538913. The reversal of 623538887 is 788835326.

623538887 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 brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 623538887 - 2⁶ = 623538823 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 (623588887) 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, 10814 + ... + 36932.

It is an arithmetic number, because the mean of its divisors is an integer number (155897220).

Almost surely, 2^623538887 is an apocalyptic number.

623538887 is a deficient number, since it is larger than the sum of its proper divisors (49993).

623538887 is a wasteful number, since it uses less digits than its factorization.

623538887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49992.

The product of its digits is 1935360, while the sum is 50.

The square root of 623538887 is about 24970.7606411979. The cubic root of 623538887 is about 854.3211953184.

The spelling of 623538887 in words is "six hundred twenty-three million, five hundred thirty-eight thousand, eight hundred eighty-seven".