140756661 has 12 divisors (see below), whose sum is σ = 203431488. Its totient is φ = 93784104.

The previous prime is 140756653. The next prime is 140756683. The reversal of 140756661 is 166657041.

140756661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 140756661 - 2³ = 140756653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140756261) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18166 + ... + 24728.

It is an arithmetic number, because the mean of its divisors is an integer number (16952624).

Almost surely, 2^140756661 is an apocalyptic number.

It is an amenable number.

140756661 is a deficient number, since it is larger than the sum of its proper divisors (62674827).

140756661 is a wasteful number, since it uses less digits than its factorization.

140756661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8952 (or 8949 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 140756661 is about 11864.0912420632. The cubic root of 140756661 is about 520.1831960540.

It can be divided in two parts, 14075 and 6661, that added together give a 4-th power (20736 = 12⁴).

The spelling of 140756661 in words is "one hundred forty million, seven hundred fifty-six thousand, six hundred sixty-one".