26774561 has 4 divisors (see below), whose sum is σ = 29208624. Its totient is φ = 24340500.

The previous prime is 26774557. The next prime is 26774563. The reversal of 26774561 is 16547762.

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 26774561 - 2² = 26774557 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26774563) 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, 1217015 + ... + 1217036.

It is an arithmetic number, because the mean of its divisors is an integer number (7302156).

Almost surely, 2^26774561 is an apocalyptic number.

It is an amenable number.

26774561 is a deficient number, since it is larger than the sum of its proper divisors (2434063).

26774561 is a wasteful number, since it uses less digits than its factorization.

26774561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2434062.

The product of its digits is 70560, while the sum is 38.

The square root of 26774561 is about 5174.4140731101. The cubic root of 26774561 is about 299.1627060442.

The spelling of 26774561 in words is "twenty-six million, seven hundred seventy-four thousand, five hundred sixty-one".