26939665 has 8 divisors (see below), whose sum is σ = 33116328. Its totient is φ = 21025920.

The previous prime is 26939657. The next prime is 26939683. The reversal of 26939665 is 56693962.

It can be written as a sum of positive squares in 4 ways, for example, as 1979649 + 24960016 = 1407^2 + 4996^2 .

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

It is not a de Polignac number, because 26939665 - 2³ = 26939657 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65502 + ... + 65911.

It is an arithmetic number, because the mean of its divisors is an integer number (4139541).

Almost surely, 2^26939665 is an apocalyptic number.

It is an amenable number.

26939665 is a deficient number, since it is larger than the sum of its proper divisors (6176663).

26939665 is a wasteful number, since it uses less digits than its factorization.

26939665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131459.

The product of its digits is 524880, while the sum is 46.

The square root of 26939665 is about 5190.3434375771. The cubic root of 26939665 is about 299.7763703778.

The spelling of 26939665 in words is "twenty-six million, nine hundred thirty-nine thousand, six hundred sixty-five".