85174786697 has 36 divisors (see below), whose sum is σ = 117284650308. Its totient is φ = 61264526400.

The previous prime is 85174786687. The next prime is 85174786733. The reversal of 85174786697 is 79668747158.

It can be written as a sum of positive squares in 2 ways, for example, as 34379093056 + 50795693641 = 185416^2 + 225379^2 .

It is not a de Polignac number, because 85174786697 - 2⁴ = 85174786681 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85174786687) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 475454 + ... + 629607.

It is an arithmetic number, because the mean of its divisors is an integer number (3257906953).

Almost surely, 2^85174786697 is an apocalyptic number.

It is an amenable number.

85174786697 is a deficient number, since it is larger than the sum of its proper divisors (32109863611).

85174786697 is a wasteful number, since it uses less digits than its factorization.

85174786697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1105110 (or 1105092 counting only the distinct ones).

The product of its digits is 142248960, while the sum is 68.

The spelling of 85174786697 in words is "eighty-five billion, one hundred seventy-four million, seven hundred eighty-six thousand, six hundred ninety-seven".