26656961 has 4 divisors (see below), whose sum is σ = 26670000. Its totient is φ = 26643924.

The previous prime is 26656957. The next prime is 26656963. The reversal of 26656961 is 16965662.

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.

It is a cyclic number.

It is not a de Polignac number, because 26656961 - 2² = 26656957 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26656963) 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, 2711 + ... + 7788.

It is an arithmetic number, because the mean of its divisors is an integer number (6667500).

Almost surely, 2^26656961 is an apocalyptic number.

It is an amenable number.

26656961 is a deficient number, since it is larger than the sum of its proper divisors (13039).

26656961 is a wasteful number, since it uses less digits than its factorization.

26656961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13038.

The product of its digits is 116640, while the sum is 41.

The square root of 26656961 is about 5163.0379622854. The cubic root of 26656961 is about 298.7240661883.

The spelling of 26656961 in words is "twenty-six million, six hundred fifty-six thousand, nine hundred sixty-one".