26243661 has 8 divisors (see below), whose sum is σ = 35267584. Its totient is φ = 17357760.

The previous prime is 26243611. The next prime is 26243671. The reversal of 26243661 is 16634262.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 26243661 - 2¹⁰ = 26242637 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 (26243611) 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 7 ways as a sum of consecutive naturals, for example, 34060 + ... + 34821.

It is an arithmetic number, because the mean of its divisors is an integer number (4408448).

Almost surely, 2^26243661 is an apocalyptic number.

It is an amenable number.

26243661 is a deficient number, since it is larger than the sum of its proper divisors (9023923).

26243661 is a wasteful number, since it uses less digits than its factorization.

26243661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69011.

The product of its digits is 10368, while the sum is 30.

The square root of 26243661 is about 5122.8567225719. The cubic root of 26243661 is about 297.1721728416.

The spelling of 26243661 in words is "twenty-six million, two hundred forty-three thousand, six hundred sixty-one".