140665760 has 48 divisors (see below), whose sum is σ = 333355176. Its totient is φ = 56091648.

The previous prime is 140665757. The next prime is 140665787. The reversal of 140665760 is 67566041.

It can be written as a sum of positive squares in 4 ways, for example, as 93934864 + 46730896 = 9692^2 + 6836^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 140665760.

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, 58502 + ... + 60858.

Almost surely, 2^140665760 is an apocalyptic number.

140665760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140665760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166677588).

140665760 is an abundant number, since it is smaller than the sum of its proper divisors (192689416).

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

140665760 is a wasteful number, since it uses less digits than its factorization.

140665760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2745 (or 2737 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 140665760 is about 11860.2596936155. The cubic root of 140665760 is about 520.0711934083.

The spelling of 140665760 in words is "one hundred forty million, six hundred sixty-five thousand, seven hundred sixty".