85850689 has 4 divisors (see below), whose sum is σ = 86638420. Its totient is φ = 85062960.

The previous prime is 85850669. The next prime is 85850711. The reversal of 85850689 is 98605858.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 43665664 + 42185025 = 6608^2 + 6495^2 .

It is a cyclic number.

It is not a de Polignac number, because 85850689 - 2⁵ = 85850657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85850669) 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, 393702 + ... + 393919.

It is an arithmetic number, because the mean of its divisors is an integer number (21659605).

Almost surely, 2^85850689 is an apocalyptic number.

It is an amenable number.

85850689 is a deficient number, since it is larger than the sum of its proper divisors (787731).

85850689 is a wasteful number, since it uses less digits than its factorization.

85850689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 787730.

The product of its (nonzero) digits is 691200, while the sum is 49.

The square root of 85850689 is about 9265.5646886739. The cubic root of 85850689 is about 441.1448988499.

The spelling of 85850689 in words is "eighty-five million, eight hundred fifty thousand, six hundred eighty-nine".