26670899 has 2 divisors, whose sum is σ = 26670900. Its totient is φ = 26670898.

The previous prime is 26670887. The next prime is 26670901. The reversal of 26670899 is 99807662.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 26670899 - 2¹⁶ = 26605363 is a prime.

It is a super-2 number, since 2×26670899² = 1422673706936402, which contains 22 as substring.

Together with 26670901, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (26670859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13335449 + 13335450.

It is an arithmetic number, because the mean of its divisors is an integer number (13335450).

Almost surely, 2^26670899 is an apocalyptic number.

26670899 is a deficient number, since it is larger than the sum of its proper divisors (1).

26670899 is an equidigital number, since it uses as much as digits as its factorization.

26670899 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 326592, while the sum is 47.

The square root of 26670899 is about 5164.3875725975. The cubic root of 26670899 is about 298.7761212666.

The spelling of 26670899 in words is "twenty-six million, six hundred seventy thousand, eight hundred ninety-nine".