140807687 has 4 divisors (see below), whose sum is σ = 141316296. Its totient is φ = 140299080.

The previous prime is 140807677. The next prime is 140807707. The reversal of 140807687 is 786708041.

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 140807687 - 2¹² = 140803591 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 (140807627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 253889 + ... + 254442.

It is an arithmetic number, because the mean of its divisors is an integer number (35329074).

Almost surely, 2^140807687 is an apocalyptic number.

140807687 is a deficient number, since it is larger than the sum of its proper divisors (508609).

140807687 is an equidigital number, since it uses as much as digits as its factorization.

140807687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508608.

The product of its (nonzero) digits is 75264, while the sum is 41.

The square root of 140807687 is about 11866.2414858286. The cubic root of 140807687 is about 520.2460460365.

The spelling of 140807687 in words is "one hundred forty million, eight hundred seven thousand, six hundred eighty-seven".