26961791 has 4 divisors (see below), whose sum is σ = 27089784. Its totient is φ = 26833800.

The previous prime is 26961769. The next prime is 26961797. The reversal of 26961791 is 19716962.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26961791 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 (26961797) 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, 63680 + ... + 64101.

It is an arithmetic number, because the mean of its divisors is an integer number (6772446).

Almost surely, 2^26961791 is an apocalyptic number.

26961791 is a deficient number, since it is larger than the sum of its proper divisors (127993).

26961791 is a wasteful number, since it uses less digits than its factorization.

26961791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127992.

The product of its digits is 40824, while the sum is 41.

The square root of 26961791 is about 5192.4744582906. The cubic root of 26961791 is about 299.8584183778.

The spelling of 26961791 in words is "twenty-six million, nine hundred sixty-one thousand, seven hundred ninety-one".