85854641 has 4 divisors (see below), whose sum is σ = 90904932. Its totient is φ = 80804352.

The previous prime is 85854623. The next prime is 85854679. The reversal of 85854641 is 14645858.

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 57456400 + 28398241 = 7580^2 + 5329^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85854641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85854611) 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, 2525120 + ... + 2525153.

It is an arithmetic number, because the mean of its divisors is an integer number (22726233).

Almost surely, 2^85854641 is an apocalyptic number.

It is an amenable number.

85854641 is a deficient number, since it is larger than the sum of its proper divisors (5050291).

85854641 is a wasteful number, since it uses less digits than its factorization.

85854641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5050290.

The product of its digits is 153600, while the sum is 41.

The square root of 85854641 is about 9265.7779489906. Note that the first 3 decimals coincide. The cubic root of 85854641 is about 441.1516678808.

The spelling of 85854641 in words is "eighty-five million, eight hundred fifty-four thousand, six hundred forty-one".