140660 has 24 divisors (see below), whose sum is σ = 318696. Its totient is φ = 51840.

The previous prime is 140659. The next prime is 140663. The reversal of 140660 is 66041.

It can be written as a sum of positive squares in 4 ways, for example, as 784 + 139876 = 28^2 + 374^2 .

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 140660.

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, 11 + ... + 530.

It is an arithmetic number, because the mean of its divisors is an integer number (13279).

2¹⁴⁰⁶⁶⁰ is an apocalyptic number.

140660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (159348).

140660 is an abundant number, since it is smaller than the sum of its proper divisors (178036).

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

140660 is a wasteful number, since it uses less digits than its factorization.

140660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563 (or 561 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 140660 is about 375.0466637633. The cubic root of 140660 is about 52.0064094664.

The spelling of 140660 in words is "one hundred forty thousand, six hundred sixty".