140660187 has 4 divisors (see below), whose sum is σ = 187546920. Its totient is φ = 93773456.

The previous prime is 140660161. The next prime is 140660209. The reversal of 140660187 is 781066041.

It is a happy number.

140660187 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 140660187 - 2⁸ = 140659931 is a prime.

It is not an unprimeable number, because it can be changed into a prime (140660087) 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, 23443362 + ... + 23443367.

It is an arithmetic number, because the mean of its divisors is an integer number (46886730).

Almost surely, 2^140660187 is an apocalyptic number.

140660187 is a deficient number, since it is larger than the sum of its proper divisors (46886733).

140660187 is an equidigital number, since it uses as much as digits as its factorization.

140660187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46886732.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 140660187 is about 11860.0247470231. The cubic root of 140660187 is about 520.0643251293.

The spelling of 140660187 in words is "one hundred forty million, six hundred sixty thousand, one hundred eighty-seven".