786868687 has 24 divisors (see below), whose sum is σ = 911826720. Its totient is φ = 677476800.

The previous prime is 786868633. The next prime is 786868697.

786868687 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 786868687 - 2¹⁵ = 786835919 is a prime.

It is a super-2 number, since 2×786868687² = 1238324661162207938, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (786868627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 183862 + ... + 188092.

It is an arithmetic number, because the mean of its divisors is an integer number (37992780).

Almost surely, 2^786868687 is an apocalyptic number.

786868687 is a deficient number, since it is larger than the sum of its proper divisors (124958033).

786868687 is a wasteful number, since it uses less digits than its factorization.

786868687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4335 (or 4324 counting only the distinct ones).

The product of its digits is 43352064, while the sum is 64.

The square root of 786868687 is about 28051.1797791109. The cubic root of 786868687 is about 923.2105407251.

The spelling of 786868687 in words is "seven hundred eighty-six million, eight hundred sixty-eight thousand, six hundred eighty-seven".