140081566 has 8 divisors (see below), whose sum is σ = 221181480. Its totient is φ = 66354408.

The previous prime is 140081563. The next prime is 140081587. The reversal of 140081566 is 665180041.

140081566 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140081561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1843141 + ... + 1843216.

It is an arithmetic number, because the mean of its divisors is an integer number (27647685).

Almost surely, 2^140081566 is an apocalyptic number.

140081566 is a deficient number, since it is larger than the sum of its proper divisors (81099914).

140081566 is a wasteful number, since it uses less digits than its factorization.

140081566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3686378.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 140081566 is about 11835.6058569048. The cubic root of 140081566 is about 519.3502313158.

The spelling of 140081566 in words is "one hundred forty million, eighty-one thousand, five hundred sixty-six".