140368686 has 16 divisors (see below), whose sum is σ = 285340368. Its totient is φ = 46022400.

The previous prime is 140368681. The next prime is 140368717. The reversal of 140368686 is 686863041.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140368681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191395 + ... + 192126.

It is an arithmetic number, because the mean of its divisors is an integer number (17833773).

Almost surely, 2^140368686 is an apocalyptic number.

140368686 is an abundant number, since it is smaller than the sum of its proper divisors (144971682).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

140368686 is a wasteful number, since it uses less digits than its factorization.

140368686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383587.

The product of its (nonzero) digits is 165888, while the sum is 42.

The square root of 140368686 is about 11847.7291495037. The cubic root of 140368686 is about 519.7048201444.

It can be divided in two parts, 14036 and 8686, that added together give a palindrome (22722).

The spelling of 140368686 in words is "one hundred forty million, three hundred sixty-eight thousand, six hundred eighty-six".