26720611 has 4 divisors (see below), whose sum is σ = 26747512. Its totient is φ = 26693712.

The previous prime is 26720567. The next prime is 26720627. The reversal of 26720611 is 11602762.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11602762 = 2 ⋅5801381.

It is a cyclic number.

It is not a de Polignac number, because 26720611 - 2⁷ = 26720483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26720671) 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, 11901 + ... + 13966.

It is an arithmetic number, because the mean of its divisors is an integer number (6686878).

Almost surely, 2^26720611 is an apocalyptic number.

26720611 is a deficient number, since it is larger than the sum of its proper divisors (26901).

26720611 is a wasteful number, since it uses less digits than its factorization.

26720611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26900.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 26720611 is about 5169.1982937396. The cubic root of 26720611 is about 298.9616360736.

The spelling of 26720611 in words is "twenty-six million, seven hundred twenty thousand, six hundred eleven".