26406641 has 6 divisors (see below), whose sum is σ = 27141030. Its totient is φ = 25691616.

The previous prime is 26406629. The next prime is 26406659. The reversal of 26406641 is 14660462.

It can be written as a sum of positive squares in 3 ways, for example, as 17430625 + 8976016 = 4175^2 + 2996^2 .

It is not a de Polignac number, because 26406641 - 2⁶ = 26406577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26406671) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8276 + ... + 11013.

It is an arithmetic number, because the mean of its divisors is an integer number (4523505).

Almost surely, 2^26406641 is an apocalyptic number.

It is an amenable number.

26406641 is a deficient number, since it is larger than the sum of its proper divisors (734389).

26406641 is an equidigital number, since it uses as much as digits as its factorization.

26406641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19363 (or 19326 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 26406641 is about 5138.7392422656. The cubic root of 26406641 is about 297.7860760674.

The spelling of 26406641 in words is "twenty-six million, four hundred six thousand, six hundred forty-one".