26712561 has 8 divisors (see below), whose sum is σ = 35665920. Its totient is φ = 17783792.

The previous prime is 26712541. The next prime is 26712577. The reversal of 26712561 is 16521762.

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 26712561 - 2⁵ = 26712529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (26712541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3441 + ... + 8078.

It is an arithmetic number, because the mean of its divisors is an integer number (4458240).

Almost surely, 2^26712561 is an apocalyptic number.

It is an amenable number.

26712561 is a deficient number, since it is larger than the sum of its proper divisors (8953359).

26712561 is a wasteful number, since it uses less digits than its factorization.

26712561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12295.

The product of its digits is 5040, while the sum is 30.

The square root of 26712561 is about 5168.4195843604. The cubic root of 26712561 is about 298.9316107761.

The spelling of 26712561 in words is "twenty-six million, seven hundred twelve thousand, five hundred sixty-one".