85243697 has 32 divisors (see below), whose sum is σ = 109396224. Its totient is φ = 64512000.

The previous prime is 85243649. The next prime is 85243699. The reversal of 85243697 is 79634258.

It is not a de Polignac number, because 85243697 - 2¹⁶ = 85178161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85243699) 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 31 ways as a sum of consecutive naturals, for example, 754313 + ... + 754425.

It is an arithmetic number, because the mean of its divisors is an integer number (3418632).

Almost surely, 2^85243697 is an apocalyptic number.

It is an amenable number.

85243697 is a deficient number, since it is larger than the sum of its proper divisors (24152527).

85243697 is a wasteful number, since it uses less digits than its factorization.

85243697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329.

The product of its digits is 362880, while the sum is 44.

The square root of 85243697 is about 9232.7513234138. The cubic root of 85243697 is about 440.1027600899.

It can be divided in two parts, 8524 and 3697, that added together give a palindrome (12221).

The spelling of 85243697 in words is "eighty-five million, two hundred forty-three thousand, six hundred ninety-seven".