140686 has 16 divisors (see below), whose sum is σ = 260064. Its totient is φ = 55584.

The previous prime is 140683. The next prime is 140689. The reversal of 140686 is 686041.

It is an interprime number because it is at equal distance from previous prime (140683) and next prime (140689).

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 140686.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 205 + ... + 568.

It is an arithmetic number, because the mean of its divisors is an integer number (16254).

2¹⁴⁰⁶⁸⁶ is an apocalyptic number.

140686 is a deficient number, since it is larger than the sum of its proper divisors (119378).

140686 is a wasteful number, since it uses less digits than its factorization.

140686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 795.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 140686 is about 375.0813245151. The cubic root of 140686 is about 52.0096136072.

The spelling of 140686 in words is "one hundred forty thousand, six hundred eighty-six".