26949613 has 8 divisors (see below), whose sum is σ = 27977400. Its totient is φ = 25928448.

The previous prime is 26949589. The next prime is 26949647. The reversal of 26949613 is 31694962.

It can be written as a sum of positive squares in 4 ways, for example, as 2377764 + 24571849 = 1542^2 + 4957^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 26949613 - 2²¹ = 24852461 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 (26949313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7593 + ... + 10561.

It is an arithmetic number, because the mean of its divisors is an integer number (3497175).

Almost surely, 2^26949613 is an apocalyptic number.

It is an amenable number.

26949613 is a deficient number, since it is larger than the sum of its proper divisors (1027787).

26949613 is a wasteful number, since it uses less digits than its factorization.

26949613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3311.

The product of its digits is 69984, while the sum is 40.

The square root of 26949613 is about 5191.3016672122. The cubic root of 26949613 is about 299.8132652727.

The spelling of 26949613 in words is "twenty-six million, nine hundred forty-nine thousand, six hundred thirteen".