26706666 has 64 divisors (see below), whose sum is σ = 65664000. Its totient is φ = 7218288.

The previous prime is 26706649. The next prime is 26706671. The reversal of 26706666 is 66660762.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

26706666 is a modest number, since divided by 6666 gives 2670 as remainder.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38761 + ... + 39443.

It is an arithmetic number, because the mean of its divisors is an integer number (1026000).

Almost surely, 2^26706666 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26706666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32832000).

26706666 is an abundant number, since it is smaller than the sum of its proper divisors (38957334).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26706666 is a wasteful number, since it uses less digits than its factorization.

26706666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 728 (or 714 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 39.

The square root of 26706666 is about 5167.8492625076. The cubic root of 26706666 is about 298.9096194803.

It can be divided in two parts, 26706 and 666, that added together give a palindrome (27372).

The spelling of 26706666 in words is "twenty-six million, seven hundred six thousand, six hundred sixty-six".