26690379 has 4 divisors (see below), whose sum is σ = 35587176. Its totient is φ = 17793584.

The previous prime is 26690371. The next prime is 26690381. The reversal of 26690379 is 97309662.

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 26690379 - 2³ = 26690371 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 26690379.

It is not an unprimeable number, because it can be changed into a prime (26690371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4448394 + ... + 4448399.

It is an arithmetic number, because the mean of its divisors is an integer number (8896794).

Almost surely, 2^26690379 is an apocalyptic number.

26690379 is a deficient number, since it is larger than the sum of its proper divisors (8896797).

26690379 is an equidigital number, since it uses as much as digits as its factorization.

26690379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8896796.

The product of its (nonzero) digits is 122472, while the sum is 42.

The square root of 26690379 is about 5166.2732215786. The cubic root of 26690379 is about 298.8488440050.

The spelling of 26690379 in words is "twenty-six million, six hundred ninety thousand, three hundred seventy-nine".