868786 has 8 divisors (see below), whose sum is σ = 1308060. Its totient is φ = 432768.

The previous prime is 868783. The next prime is 868787. The reversal of 868786 is 687868.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 866761 + 2025 = 931^2 + 45^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×868786² = 1509578227592, which contains 22 as substring.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (868783) 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, 30 + ... + 1318.

2⁸⁶⁸⁷⁸⁶ is an apocalyptic number.

868786 is a deficient number, since it is larger than the sum of its proper divisors (439274).

868786 is a wasteful number, since it uses less digits than its factorization.

868786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1628.

The product of its digits is 129024, while the sum is 43.

The square root of 868786 is about 932.0869058194. The cubic root of 868786 is about 95.4196028497.

The spelling of 868786 in words is "eight hundred sixty-eight thousand, seven hundred eighty-six".