140685 has 16 divisors (see below), whose sum is σ = 229824. Its totient is φ = 73472.

The previous prime is 140683. The next prime is 140689. The reversal of 140685 is 586041.

140685 = 121² + 122² + ... + 129².

It is a cyclic number.

It is not a de Polignac number, because 140685 - 2¹ = 140683 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a plaindrome in base 16.

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 15 ways as a sum of consecutive naturals, for example, 1189 + ... + 1301.

It is an arithmetic number, because the mean of its divisors is an integer number (14364).

2¹⁴⁰⁶⁸⁵ is an apocalyptic number.

140685 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

140685 is a deficient number, since it is larger than the sum of its proper divisors (89139).

140685 is a wasteful number, since it uses less digits than its factorization.

140685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 140685 is about 375.0799914685. The cubic root of 140685 is about 52.0094903783.

The spelling of 140685 in words is "one hundred forty thousand, six hundred eighty-five".