623116013 has 24 divisors (see below), whose sum is σ = 692284608. Its totient is φ = 560431872.

The previous prime is 623116009. The next prime is 623116019. The reversal of 623116013 is 310611326.

It is a happy number.

It is not a de Polignac number, because 623116013 - 2² = 623116009 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 623116013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623116019) 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 23 ways as a sum of consecutive naturals, for example, 1279256 + ... + 1279742.

It is an arithmetic number, because the mean of its divisors is an integer number (28845192).

Almost surely, 2^623116013 is an apocalyptic number.

It is an amenable number.

623116013 is a deficient number, since it is larger than the sum of its proper divisors (69168595).

623116013 is a wasteful number, since it uses less digits than its factorization.

623116013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 693 (or 680 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 623116013 is about 24962.2918218660. The cubic root of 623116013 is about 854.1280226985.

Adding to 623116013 its reverse (310611326), we get a palindrome (933727339).

The spelling of 623116013 in words is "six hundred twenty-three million, one hundred sixteen thousand, thirteen".