26681401 has 4 divisors (see below), whose sum is σ = 26696592. Its totient is φ = 26666212.

The previous prime is 26681387. The next prime is 26681411. The reversal of 26681401 is 10418662.

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 26681401 - 2⁷ = 26681273 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 26681401.

It is not an unprimeable number, because it can be changed into a prime (26681411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4555 + ... + 8608.

It is an arithmetic number, because the mean of its divisors is an integer number (6674148).

Almost surely, 2^26681401 is an apocalyptic number.

It is an amenable number.

26681401 is a deficient number, since it is larger than the sum of its proper divisors (15191).

26681401 is a wasteful number, since it uses less digits than its factorization.

26681401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15190.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 26681401 is about 5165.4042436193. The cubic root of 26681401 is about 298.8153317318.

The spelling of 26681401 in words is "twenty-six million, six hundred eighty-one thousand, four hundred one".