26671297 has 4 divisors (see below), whose sum is σ = 26866116. Its totient is φ = 26476480.

The previous prime is 26671291. The next prime is 26671301. The reversal of 26671297 is 79217662.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 79217662 = 2 ⋅39608831.

It can be written as a sum of positive squares in 2 ways, for example, as 6922161 + 19749136 = 2631^2 + 4444^2 .

It is a cyclic number.

It is not a de Polignac number, because 26671297 - 2¹⁵ = 26638529 is a prime.

It is a super-2 number, since 2×26671297² = 1422716167324418, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26671291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97204 + ... + 97477.

It is an arithmetic number, because the mean of its divisors is an integer number (6716529).

Almost surely, 2^26671297 is an apocalyptic number.

It is an amenable number.

26671297 is a deficient number, since it is larger than the sum of its proper divisors (194819).

26671297 is a wasteful number, since it uses less digits than its factorization.

26671297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194818.

The product of its digits is 63504, while the sum is 40.

The square root of 26671297 is about 5164.4261055804. The cubic root of 26671297 is about 298.7776074345. Note that the first 3 decimals are identical.

The spelling of 26671297 in words is "twenty-six million, six hundred seventy-one thousand, two hundred ninety-seven".