26880647 has 4 divisors (see below), whose sum is σ = 27131976. Its totient is φ = 26629320.

The previous prime is 26880641. The next prime is 26880653. The reversal of 26880647 is 74608862.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74608862 = 2 ⋅37304431.

It is an interprime number because it is at equal distance from previous prime (26880641) and next prime (26880653).

It is a cyclic number.

It is not a de Polignac number, because 26880647 - 2²⁰ = 25832071 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 (26880641) 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, 125504 + ... + 125717.

It is an arithmetic number, because the mean of its divisors is an integer number (6782994).

Almost surely, 2^26880647 is an apocalyptic number.

26880647 is a deficient number, since it is larger than the sum of its proper divisors (251329).

26880647 is a wasteful number, since it uses less digits than its factorization.

26880647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251328.

The product of its (nonzero) digits is 129024, while the sum is 41.

The square root of 26880647 is about 5184.6549547680. The cubic root of 26880647 is about 299.5572988923.

The spelling of 26880647 in words is "twenty-six million, eight hundred eighty thousand, six hundred forty-seven".