26466661 has 12 divisors (see below), whose sum is σ = 29067052. Its totient is φ = 23951808.

The previous prime is 26466623. The next prime is 26466683. The reversal of 26466661 is 16666462.

It can be written as a sum of positive squares in 2 ways, for example, as 9036036 + 17430625 = 3006^2 + 4175^2 .

It is not a de Polignac number, because 26466661 - 2⁷ = 26466533 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 26466661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26466691) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 158400 + ... + 158566.

Almost surely, 2^26466661 is an apocalyptic number.

It is an amenable number.

26466661 is a deficient number, since it is larger than the sum of its proper divisors (2600391).

26466661 is an equidigital number, since it uses as much as digits as its factorization.

26466661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420 (or 253 counting only the distinct ones).

The product of its digits is 62208, while the sum is 37.

The square root of 26466661 is about 5144.5758814503. The cubic root of 26466661 is about 298.0115193061.

The spelling of 26466661 in words is "twenty-six million, four hundred sixty-six thousand, six hundred sixty-one".