623563013 has 4 divisors (see below), whose sum is σ = 628323168. Its totient is φ = 618802860.

The previous prime is 623563001. The next prime is 623563067. The reversal of 623563013 is 310365326.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 623563013 - 2⁴ = 623562997 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 (623563513) 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, 2379881 + ... + 2380142.

It is an arithmetic number, because the mean of its divisors is an integer number (157080792).

Almost surely, 2^623563013 is an apocalyptic number.

It is an amenable number.

623563013 is a deficient number, since it is larger than the sum of its proper divisors (4760155).

623563013 is a wasteful number, since it uses less digits than its factorization.

623563013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4760154.

The product of its (nonzero) digits is 9720, while the sum is 29.

The square root of 623563013 is about 24971.2437215290. The cubic root of 623563013 is about 854.3322136568.

The spelling of 623563013 in words is "six hundred twenty-three million, five hundred sixty-three thousand, thirteen".