140665 has 8 divisors (see below), whose sum is σ = 192960. Its totient is φ = 96432.

The previous prime is 140663. The next prime is 140677. The reversal of 140665 is 566041.

140665 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 140665 - 2¹ = 140663 is a prime.

140665 is a lucky number.

It is a plaindrome in base 16.

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 7 ways as a sum of consecutive naturals, for example, 1975 + ... + 2044.

It is an arithmetic number, because the mean of its divisors is an integer number (24120).

2¹⁴⁰⁶⁶⁵ is an apocalyptic number.

It is an amenable number.

140665 is a deficient number, since it is larger than the sum of its proper divisors (52295).

140665 is an equidigital number, since it uses as much as digits as its factorization.

140665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4031.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 140665 is about 375.0533295413. The cubic root of 140665 is about 52.0070256779.

The spelling of 140665 in words is "one hundred forty thousand, six hundred sixty-five".