140666860 has 24 divisors (see below), whose sum is σ = 296266320. Its totient is φ = 56101824.

The previous prime is 140666843. The next prime is 140666863. The reversal of 140666860 is 68666041.

140666860 is digitally balanced in base 2 and base 3, because in such bases 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 (140666863) 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, 3195 + ... + 17074.

It is an arithmetic number, because the mean of its divisors is an integer number (12344430).

Almost surely, 2^140666860 is an apocalyptic number.

140666860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140666860 is an abundant number, since it is smaller than the sum of its proper divisors (155599460).

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

140666860 is a wasteful number, since it uses less digits than its factorization.

140666860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20625 (or 20623 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 140666860 is about 11860.3060668770. The cubic root of 140666860 is about 520.0725490493.

The spelling of 140666860 in words is "one hundred forty million, six hundred sixty-six thousand, eight hundred sixty".