285697193 has 4 divisors (see below), whose sum is σ = 285801360. Its totient is φ = 285593028.

The previous prime is 285697151. The next prime is 285697199. The reversal of 285697193 is 391796582.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-285697193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (285697199) 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, 47855 + ... + 53492.

It is an arithmetic number, because the mean of its divisors is an integer number (71450340).

Almost surely, 2^285697193 is an apocalyptic number.

It is an amenable number.

285697193 is a deficient number, since it is larger than the sum of its proper divisors (104167).

285697193 is a wasteful number, since it uses less digits than its factorization.

285697193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104166.

The product of its digits is 816480, while the sum is 50.

The square root of 285697193 is about 16902.5794777010. The cubic root of 285697193 is about 658.6206216014.

The spelling of 285697193 in words is "two hundred eighty-five million, six hundred ninety-seven thousand, one hundred ninety-three".