140561688 has 32 divisors (see below), whose sum is σ = 362741760. Its totient is φ = 45342240.

The previous prime is 140561669. The next prime is 140561747. The reversal of 140561688 is 886165041.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93720 + ... + 95207.

It is an arithmetic number, because the mean of its divisors is an integer number (11335680).

Almost surely, 2^140561688 is an apocalyptic number.

It is an amenable number.

140561688 is an abundant number, since it is smaller than the sum of its proper divisors (222180072).

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

140561688 is a wasteful number, since it uses less digits than its factorization.

140561688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188967 (or 188963 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 39.

The square root of 140561688 is about 11855.8714567930. The cubic root of 140561688 is about 519.9429030011.

The spelling of 140561688 in words is "one hundred forty million, five hundred sixty-one thousand, six hundred eighty-eight".