140868861 has 16 divisors (see below), whose sum is σ = 215849088. Its totient is φ = 80049600.

The previous prime is 140868839. The next prime is 140868881. The reversal of 140868861 is 168868041.

It is not a de Polignac number, because 140868861 - 2⁶ = 140868797 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140868821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14730 + ... + 22331.

It is an arithmetic number, because the mean of its divisors is an integer number (13490568).

Almost surely, 2^140868861 is an apocalyptic number.

It is an amenable number.

140868861 is a deficient number, since it is larger than the sum of its proper divisors (74980227).

140868861 is a wasteful number, since it uses less digits than its factorization.

140868861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37252.

The product of its (nonzero) digits is 73728, while the sum is 42.

The square root of 140868861 is about 11868.8188544606. The cubic root of 140868861 is about 520.3213755504.

The spelling of 140868861 in words is "one hundred forty million, eight hundred sixty-eight thousand, eight hundred sixty-one".