26670166 has 4 divisors (see below), whose sum is σ = 40005252. Its totient is φ = 13335082.

The previous prime is 26670157. The next prime is 26670173. The reversal of 26670166 is 66107662.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×26670166² = 1422595508935112, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6667540 + ... + 6667543.

It is an arithmetic number, because the mean of its divisors is an integer number (10001313).

Almost surely, 2^26670166 is an apocalyptic number.

26670166 is a deficient number, since it is larger than the sum of its proper divisors (13335086).

26670166 is a wasteful number, since it uses less digits than its factorization.

26670166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13335085.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 26670166 is about 5164.3166053216. The cubic root of 26670166 is about 298.7733841397.

The spelling of 26670166 in words is "twenty-six million, six hundred seventy thousand, one hundred sixty-six".