26670071 has 4 divisors (see below), whose sum is σ = 26919432. Its totient is φ = 26420712.

The previous prime is 26670047. The next prime is 26670089. The reversal of 26670071 is 17007662.

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

It is a cyclic number.

It is not a de Polignac number, because 26670071 - 2¹⁰ = 26669047 is a prime.

It is a super-2 number, since 2×26670071² = 1422585374290082, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26670001) 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, 124520 + ... + 124733.

It is an arithmetic number, because the mean of its divisors is an integer number (6729858).

Almost surely, 2^26670071 is an apocalyptic number.

26670071 is a deficient number, since it is larger than the sum of its proper divisors (249361).

26670071 is a wasteful number, since it uses less digits than its factorization.

26670071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249360.

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 26670071 is about 5164.3074075814. The cubic root of 26670071 is about 298.7730293925.

The spelling of 26670071 in words is "twenty-six million, six hundred seventy thousand, seventy-one".