26670645 has 12 divisors (see below), whose sum is σ = 46229196. Its totient is φ = 14224320.

The previous prime is 26670641. The next prime is 26670647. The reversal of 26670645 is 54607662.

26670645 is a `hidden beast` number, since 2 + 6 + 6 + 7 + 0 + 645 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 11249316 + 15421329 = 3354^2 + 3927^2 .

It is not a de Polignac number, because 26670645 - 2² = 26670641 is a prime.

It is a super-2 number, since 2×26670645² = 1422646609432050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26670641) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 296296 + ... + 296385.

It is an arithmetic number, because the mean of its divisors is an integer number (3852433).

Almost surely, 2^26670645 is an apocalyptic number.

It is an amenable number.

26670645 is a deficient number, since it is larger than the sum of its proper divisors (19558551).

26670645 is a wasteful number, since it uses less digits than its factorization.

26670645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 592692 (or 592689 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 26670645 is about 5164.3629810462. The cubic root of 26670645 is about 298.7751727999.

The spelling of 26670645 in words is "twenty-six million, six hundred seventy thousand, six hundred forty-five".