140640580 has 12 divisors (see below), whose sum is σ = 295345260. Its totient is φ = 56256224.

The previous prime is 140640569. The next prime is 140640587. The reversal of 140640580 is 85046041.

It can be written as a sum of positive squares in 2 ways, for example, as 98883136 + 41757444 = 9944^2 + 6462^2 .

It is not an unprimeable number, because it can be changed into a prime (140640587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3515995 + ... + 3516034.

It is an arithmetic number, because the mean of its divisors is an integer number (24612105).

Almost surely, 2^140640580 is an apocalyptic number.

140640580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140640580 is an abundant number, since it is smaller than the sum of its proper divisors (154704680).

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

140640580 is a wasteful number, since it uses less digits than its factorization.

140640580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7032038 (or 7032036 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 140640580 is about 11859.1981179167. The cubic root of 140640580 is about 520.0401596203.

The spelling of 140640580 in words is "one hundred forty million, six hundred forty thousand, five hundred eighty".