849692686 has 4 divisors (see below), whose sum is σ = 1274539032. Its totient is φ = 424846342.

The previous prime is 849692681. The next prime is 849692693. The reversal of 849692686 is 686296948.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 849692686.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (849692681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212423170 + ... + 212423173.

It is an arithmetic number, because the mean of its divisors is an integer number (318634758).

Almost surely, 2^849692686 is an apocalyptic number.

849692686 is a deficient number, since it is larger than the sum of its proper divisors (424846346).

849692686 is a wasteful number, since it uses less digits than its factorization.

849692686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424846345.

The product of its digits is 8957952, while the sum is 58.

The square root of 849692686 is about 29149.4886061488. The cubic root of 849692686 is about 947.1540631149.

The spelling of 849692686 in words is "eight hundred forty-nine million, six hundred ninety-two thousand, six hundred eighty-six".