70866 has 24 divisors (see below), whose sum is σ = 159744. Its totient is φ = 22680.

The previous prime is 70853. The next prime is 70867. The reversal of 70866 is 66807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70867) by changing a digit.

70866 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 495 + ... + 621.

It is an arithmetic number, because the mean of its divisors is an integer number (6656).

2⁷⁰⁸⁶⁶ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70866, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79872).

70866 is an abundant number, since it is smaller than the sum of its proper divisors (88878).

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

70866 is a wasteful number, since it uses less digits than its factorization.

70866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166 (or 163 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 70866 is about 266.2066866177. The cubic root of 70866 is about 41.3821108737.

The spelling of 70866 in words is "seventy thousand, eight hundred sixty-six".