140266566 has 40 divisors (see below), whose sum is σ = 342878184. Its totient is φ = 42504480.

The previous prime is 140266549. The next prime is 140266573. The reversal of 140266566 is 665662041.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 140266566.

It is a congruent number.

It is an unprimeable number.

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 19 ways as a sum of consecutive naturals, for example, 37575 + ... + 41138.

Almost surely, 2^140266566 is an apocalyptic number.

140266566 is an abundant number, since it is smaller than the sum of its proper divisors (202611618).

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

140266566 is a wasteful number, since it uses less digits than its factorization.

140266566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78738 (or 78729 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 140266566 is about 11843.4186787431. The cubic root of 140266566 is about 519.5787589523.

The spelling of 140266566 in words is "one hundred forty million, two hundred sixty-six thousand, five hundred sixty-six".