26623813 has 4 divisors (see below), whose sum is σ = 26639200. Its totient is φ = 26608428.

The previous prime is 26623787. The next prime is 26623829. The reversal of 26623813 is 31832662.

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 26623813 - 2²¹ = 24526661 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 (26623873) 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, 4713 + ... + 8686.

It is an arithmetic number, because the mean of its divisors is an integer number (6659800).

Almost surely, 2^26623813 is an apocalyptic number.

It is an amenable number.

26623813 is a deficient number, since it is larger than the sum of its proper divisors (15387).

26623813 is a wasteful number, since it uses less digits than its factorization.

26623813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15386.

The product of its digits is 10368, while the sum is 31.

The square root of 26623813 is about 5159.8268381797. The cubic root of 26623813 is about 298.6001934456.

The spelling of 26623813 in words is "twenty-six million, six hundred twenty-three thousand, eight hundred thirteen".