26648971 has 4 divisors (see below), whose sum is σ = 26721952. Its totient is φ = 26575992.

The previous prime is 26648957. The next prime is 26648987. The reversal of 26648971 is 17984662.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17984662 = 2 ⋅8992331.

It is a cyclic number.

It is not a de Polignac number, because 26648971 - 2⁹ = 26648459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26648371) 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, 35940 + ... + 36673.

It is an arithmetic number, because the mean of its divisors is an integer number (6680488).

Almost surely, 2^26648971 is an apocalyptic number.

26648971 is a deficient number, since it is larger than the sum of its proper divisors (72981).

26648971 is an equidigital number, since it uses as much as digits as its factorization.

26648971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72980.

The product of its digits is 145152, while the sum is 43.

The square root of 26648971 is about 5162.2641350477. The cubic root of 26648971 is about 298.6942172770.

The spelling of 26648971 in words is "twenty-six million, six hundred forty-eight thousand, nine hundred seventy-one".