140664 has 16 divisors (see below), whose sum is σ = 351720. Its totient is φ = 46880.

The previous prime is 140663. The next prime is 140677. The reversal of 140664 is 466041.

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 140664.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 140664.

It is not an unprimeable number, because it can be changed into a prime (140663) 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, 2907 + ... + 2954.

2¹⁴⁰⁶⁶⁴ is an apocalyptic number.

It is an amenable number.

140664 is an abundant number, since it is smaller than the sum of its proper divisors (211056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

140664 is a wasteful number, since it uses less digits than its factorization.

140664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5870 (or 5866 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 140664 is about 375.0519963952. The cubic root of 140664 is about 52.0069024368.

The spelling of 140664 in words is "one hundred forty thousand, six hundred sixty-four".