26640323 has 4 divisors (see below), whose sum is σ = 26832120. Its totient is φ = 26448528.

The previous prime is 26640287. The next prime is 26640353. The reversal of 26640323 is 32304662.

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

It is a cyclic number.

It is not a de Polignac number, because 26640323 - 2¹² = 26636227 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 26640292 and 26640301.

It is not an unprimeable number, because it can be changed into a prime (26640353) 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, 95690 + ... + 95967.

It is an arithmetic number, because the mean of its divisors is an integer number (6708030).

Almost surely, 2^26640323 is an apocalyptic number.

26640323 is a deficient number, since it is larger than the sum of its proper divisors (191797).

26640323 is a wasteful number, since it uses less digits than its factorization.

26640323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191796.

The product of its (nonzero) digits is 5184, while the sum is 26.

The square root of 26640323 is about 5161.4264501202. The cubic root of 26640323 is about 298.6619034957.

Adding to 26640323 its reverse (32304662), we get a palindrome (58944985).

The spelling of 26640323 in words is "twenty-six million, six hundred forty thousand, three hundred twenty-three".