85681759 has 8 divisors (see below), whose sum is σ = 89213040. Its totient is φ = 82219200.

The previous prime is 85681753. The next prime is 85681763. The reversal of 85681759 is 95718658.

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 85681759 - 2¹⁷ = 85550687 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85681753) 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, 14629 + ... + 19630.

It is an arithmetic number, because the mean of its divisors is an integer number (11151630).

Almost surely, 2^85681759 is an apocalyptic number.

85681759 is a deficient number, since it is larger than the sum of its proper divisors (3531281).

85681759 is a wasteful number, since it uses less digits than its factorization.

85681759 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34361.

The product of its digits is 604800, while the sum is 49.

The square root of 85681759 is about 9256.4441876997. Note that the first 3 decimals coincide. The cubic root of 85681759 is about 440.8553591775.

The spelling of 85681759 in words is "eighty-five million, six hundred eighty-one thousand, seven hundred fifty-nine".