26400613 has 4 divisors (see below), whose sum is σ = 26794720. Its totient is φ = 26006508.

The previous prime is 26400601. The next prime is 26400629. The reversal of 26400613 is 31600462.

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 26400613 - 2¹⁷ = 26269541 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 (26400653) 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, 196953 + ... + 197086.

It is an arithmetic number, because the mean of its divisors is an integer number (6698680).

Almost surely, 2^26400613 is an apocalyptic number.

It is an amenable number.

26400613 is a deficient number, since it is larger than the sum of its proper divisors (394107).

26400613 is an equidigital number, since it uses as much as digits as its factorization.

26400613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394106.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 26400613 is about 5138.1526836014. The cubic root of 26400613 is about 297.7634152138.

The spelling of 26400613 in words is "twenty-six million, four hundred thousand, six hundred thirteen".