140366687 has 4 divisors (see below), whose sum is σ = 140402736. Its totient is φ = 140330640.

The previous prime is 140366659. The next prime is 140366693. The reversal of 140366687 is 786663041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 786663041 = 5281 ⋅148961.

It is a cyclic number.

It is not a de Polignac number, because 140366687 - 2⁸ = 140366431 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140366587) 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 3 ways as a sum of consecutive naturals, for example, 11363 + ... + 20244.

It is an arithmetic number, because the mean of its divisors is an integer number (35100684).

Almost surely, 2^140366687 is an apocalyptic number.

140366687 is a deficient number, since it is larger than the sum of its proper divisors (36049).

140366687 is an equidigital number, since it uses as much as digits as its factorization.

140366687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36048.

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 140366687 is about 11847.6447870452. The cubic root of 140366687 is about 519.7023530821.

The spelling of 140366687 in words is "one hundred forty million, three hundred sixty-six thousand, six hundred eighty-seven".