140605761 has 8 divisors (see below), whose sum is σ = 187877664. Its totient is φ = 93535520.

The previous prime is 140605747. The next prime is 140605807. The reversal of 140605761 is 167506041.

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

It is a cyclic number.

It is not a de Polignac number, because 140605761 - 2²¹ = 138508609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (140605721) 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 7 ways as a sum of consecutive naturals, for example, 48780 + ... + 51581.

It is an arithmetic number, because the mean of its divisors is an integer number (23484708).

Almost surely, 2^140605761 is an apocalyptic number.

It is an amenable number.

140605761 is a deficient number, since it is larger than the sum of its proper divisors (47271903).

140605761 is a wasteful number, since it uses less digits than its factorization.

140605761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100831.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 140605761 is about 11857.7300104194. The cubic root of 140605761 is about 519.9972398769.

The spelling of 140605761 in words is "one hundred forty million, six hundred five thousand, seven hundred sixty-one".