623485879 has 4 divisors (see below), whose sum is σ = 636751584. Its totient is φ = 610220176.

The previous prime is 623485867. The next prime is 623485913. The reversal of 623485879 is 978584326.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 623485879 - 2⁵ = 623485847 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 (623485979) 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, 6632782 + ... + 6632875.

It is an arithmetic number, because the mean of its divisors is an integer number (159187896).

Almost surely, 2^623485879 is an apocalyptic number.

623485879 is a deficient number, since it is larger than the sum of its proper divisors (13265705).

623485879 is a wasteful number, since it uses less digits than its factorization.

623485879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13265704.

The product of its digits is 2903040, while the sum is 52.

The square root of 623485879 is about 24969.6992172513. The cubic root of 623485879 is about 854.2969855793.

The spelling of 623485879 in words is "six hundred twenty-three million, four hundred eighty-five thousand, eight hundred seventy-nine".