140661656 has 16 divisors (see below), whose sum is σ = 267354600. Its totient is φ = 69367104.

The previous prime is 140661649. The next prime is 140661659. The reversal of 140661656 is 656166041.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140661659) 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, 119846 + ... + 121013.

Almost surely, 2^140661656 is an apocalyptic number.

It is an amenable number.

140661656 is a deficient number, since it is larger than the sum of its proper divisors (126692944).

140661656 is a wasteful number, since it uses less digits than its factorization.

140661656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240938 (or 240934 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 140661656 is about 11860.0866775922. The cubic root of 140661656 is about 520.0661355725.

The spelling of 140661656 in words is "one hundred forty million, six hundred sixty-one thousand, six hundred fifty-six".