83706857 has 8 divisors (see below), whose sum is σ = 90701184. Its totient is φ = 76791888.

The previous prime is 83706817. The next prime is 83706869. The reversal of 83706857 is 75860738.

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

It is a cyclic number.

It is not a de Polignac number, because 83706857 - 2²⁰ = 82658281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83706817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17633 + ... + 21870.

It is an arithmetic number, because the mean of its divisors is an integer number (11337648).

Almost surely, 2^83706857 is an apocalyptic number.

It is an amenable number.

83706857 is a deficient number, since it is larger than the sum of its proper divisors (6994327).

83706857 is a wasteful number, since it uses less digits than its factorization.

83706857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39679.

The product of its (nonzero) digits is 282240, while the sum is 44.

The square root of 83706857 is about 9149.1451513242. The cubic root of 83706857 is about 437.4418656905.

The spelling of 83706857 in words is "eighty-three million, seven hundred six thousand, eight hundred fifty-seven".