140231660 has 24 divisors (see below), whose sum is σ = 295584576. Its totient is φ = 55883520.

The previous prime is 140231659. The next prime is 140231669. The reversal of 140231660 is 66132041.

It is a happy number.

140231660 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (140231669) 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, 7517 + ... + 18356.

It is an arithmetic number, because the mean of its divisors is an integer number (12316024).

Almost surely, 2^140231660 is an apocalyptic number.

140231660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140231660 is an abundant number, since it is smaller than the sum of its proper divisors (155352916).

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

140231660 is a wasteful number, since it uses less digits than its factorization.

140231660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26153 (or 26151 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 140231660 is about 11841.9449416048. The cubic root of 140231660 is about 519.5356554973.

The spelling of 140231660 in words is "one hundred forty million, two hundred thirty-one thousand, six hundred sixty".