26626081 has 4 divisors (see below), whose sum is σ = 26963200. Its totient is φ = 26288964.

The previous prime is 26626079. The next prime is 26626121. The reversal of 26626081 is 18062662.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18062662 = 2 ⋅9031331.

It is a cyclic number.

It is not a de Polignac number, because 26626081 - 2¹ = 26626079 is a prime.

It is a super-2 number, since 2×26626081² = 1417896378837122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26626381) 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, 168441 + ... + 168598.

It is an arithmetic number, because the mean of its divisors is an integer number (6740800).

Almost surely, 2^26626081 is an apocalyptic number.

26626081 is the 3264-th centered pentagonal number.

It is an amenable number.

26626081 is a deficient number, since it is larger than the sum of its proper divisors (337119).

26626081 is an equidigital number, since it uses as much as digits as its factorization.

26626081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337118.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 26626081 is about 5160.0466083166. The cubic root of 26626081 is about 298.6086721461.

The spelling of 26626081 in words is "twenty-six million, six hundred twenty-six thousand, eighty-one".