85736897 has 4 divisors (see below), whose sum is σ = 86232660. Its totient is φ = 85241136.

The previous prime is 85736887. The next prime is 85736909. The reversal of 85736897 is 79863758.

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 63984001 + 21752896 = 7999^2 + 4664^2 .

It is a cyclic number.

It is not a de Polignac number, because 85736897 - 2¹⁰ = 85735873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85736887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 247622 + ... + 247967.

It is an arithmetic number, because the mean of its divisors is an integer number (21558165).

Almost surely, 2^85736897 is an apocalyptic number.

It is an amenable number.

85736897 is a deficient number, since it is larger than the sum of its proper divisors (495763).

85736897 is a wasteful number, since it uses less digits than its factorization.

85736897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495762.

The product of its digits is 2540160, while the sum is 53.

The square root of 85736897 is about 9259.4220661983. The cubic root of 85736897 is about 440.9499054408.

The spelling of 85736897 in words is "eighty-five million, seven hundred thirty-six thousand, eight hundred ninety-seven".