83866207 has 4 divisors (see below), whose sum is σ = 83932560. Its totient is φ = 83799856.

The previous prime is 83866187. The next prime is 83866243. The reversal of 83866207 is 70266838.

It is a happy number.

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 83866207 - 2¹¹ = 83864159 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 83866207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83866267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31243 + ... + 33820.

It is an arithmetic number, because the mean of its divisors is an integer number (20983140).

Almost surely, 2^83866207 is an apocalyptic number.

83866207 is a deficient number, since it is larger than the sum of its proper divisors (66353).

83866207 is a wasteful number, since it uses less digits than its factorization.

83866207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66352.

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 83866207 is about 9157.8494746310. The cubic root of 83866207 is about 437.7192709830.

The spelling of 83866207 in words is "eighty-three million, eight hundred sixty-six thousand, two hundred seven".