140860287 has 12 divisors (see below), whose sum is σ = 203837400. Its totient is φ = 93734928.

The previous prime is 140860261. The next prime is 140860301. The reversal of 140860287 is 782068041.

140860287 is a `hidden beast` number, since 1 + 40 + 8 + 602 + 8 + 7 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-140860287 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140860207) 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 11 ways as a sum of consecutive naturals, for example, 9037 + ... + 19062.

It is an arithmetic number, because the mean of its divisors is an integer number (16986450).

Almost surely, 2^140860287 is an apocalyptic number.

140860287 is a deficient number, since it is larger than the sum of its proper divisors (62977113).

140860287 is a wasteful number, since it uses less digits than its factorization.

140860287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28662 (or 28659 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 140860287 is about 11868.4576504279. The cubic root of 140860287 is about 520.3108188621.

The spelling of 140860287 in words is "one hundred forty million, eight hundred sixty thousand, two hundred eighty-seven".