686966 has 8 divisors (see below), whose sum is σ = 1177680.
Its totient is φ = 294408.
The previous prime is 686963. The next prime is 686969. The reversal of 686966 is 669686.
It is an interprime number because it is at equal distance from previous prime (686963) and next prime (686969).
It is a sphenic number, since it is the product of 3 distinct primes.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (686963) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24521 + ... + 24548.
It is an arithmetic number, because the mean of its divisors is an integer number (147210).
2686966 is an apocalyptic number.
686966 is a deficient number, since it is larger than the sum of its proper divisors (490714).
686966 is a wasteful number, since it uses less digits than its factorization.
686966 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 49078.
The product of its digits is 93312, while the sum is 41.
The square root of 686966 is about 828.8341209193.
The cubic root of 686966 is about 88.2358514823.
It can be divided in two parts, 6869 and 66, that multiplied together give a palindrome (453354).
The spelling of 686966 in words is "six hundred eighty-six thousand, nine hundred sixty-six".