826666 has 8 divisors (see below), whose sum is σ = 1293984. Its totient is φ = 395340.

The previous prime is 826663. The next prime is 826667. The reversal of 826666 is 666628.

826666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

826666 is a modest number, since divided by 6666 gives 82 as remainder.

It is not an unprimeable number, because it can be changed into a prime (826663) 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, 8940 + ... + 9031.

It is an arithmetic number, because the mean of its divisors is an integer number (161748).

2⁸²⁶⁶⁶⁶ is an apocalyptic number.

826666 is a deficient number, since it is larger than the sum of its proper divisors (467318).

826666 is a wasteful number, since it uses less digits than its factorization.

826666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17996.

The product of its digits is 20736, while the sum is 34.

The square root of 826666 is about 909.2117465145. The cubic root of 826666 is about 93.8519625468.

The spelling of 826666 in words is "eight hundred twenty-six thousand, six hundred sixty-six".