26662261 has 4 divisors (see below), whose sum is σ = 26676000. Its totient is φ = 26648524.

The previous prime is 26662249. The next prime is 26662303. The reversal of 26662261 is 16226662.

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, and also an emirpimes, since its reverse is a distinct semiprime: 16226662 = 2 ⋅8113331.

It is a cyclic number.

It is not a de Polignac number, because 26662261 - 2¹¹ = 26660213 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 (26662231) 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, 3361 + ... + 8038.

It is an arithmetic number, because the mean of its divisors is an integer number (6669000).

Almost surely, 2^26662261 is an apocalyptic number.

It is an amenable number.

26662261 is a deficient number, since it is larger than the sum of its proper divisors (13739).

26662261 is a wasteful number, since it uses less digits than its factorization.

26662261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13738.

The product of its digits is 10368, while the sum is 31.

The square root of 26662261 is about 5163.5512004821. The cubic root of 26662261 is about 298.7438625514.

The spelling of 26662261 in words is "twenty-six million, six hundred sixty-two thousand, two hundred sixty-one".