85700857 has 8 divisors (see below), whose sum is σ = 93611232. Its totient is φ = 77810400.

The previous prime is 85700851. The next prime is 85700861. The reversal of 85700857 is 75800758.

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 85700857 - 2⁷ = 85700729 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85700851) 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, 4882 + ... + 13972.

It is an arithmetic number, because the mean of its divisors is an integer number (11701404).

Almost surely, 2^85700857 is an apocalyptic number.

It is an amenable number.

85700857 is a deficient number, since it is larger than the sum of its proper divisors (7910375).

85700857 is a wasteful number, since it uses less digits than its factorization.

85700857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9959.

The product of its (nonzero) digits is 78400, while the sum is 40.

The square root of 85700857 is about 9257.4757358580. The cubic root of 85700857 is about 440.8881115014. Note that the first 3 decimals are identical.

Subtracting from 85700857 its reverse (75800758), we obtain a palindrome (9900099).

It can be divided in two parts, 85700 and 857, that multiplied together give a square (73444900 = 8570²).

The spelling of 85700857 in words is "eighty-five million, seven hundred thousand, eight hundred fifty-seven".