140550985 has 8 divisors (see below), whose sum is σ = 178582536. Its totient is φ = 105826560.

The previous prime is 140550973. The next prime is 140550997. The reversal of 140550985 is 589055041.

It is an interprime number because it is at equal distance from previous prime (140550973) and next prime (140550997).

It can be written as a sum of positive squares in 4 ways, for example, as 16540489 + 124010496 = 4067^2 + 11136^2 .

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

It is not a de Polignac number, because 140550985 - 2²³ = 132162377 is a prime.

It is a Duffinian 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, 826686 + ... + 826855.

It is an arithmetic number, because the mean of its divisors is an integer number (22322817).

Almost surely, 2^140550985 is an apocalyptic number.

It is an amenable number.

140550985 is a deficient number, since it is larger than the sum of its proper divisors (38031551).

140550985 is a wasteful number, since it uses less digits than its factorization.

140550985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1653563.

The product of its (nonzero) digits is 36000, while the sum is 37.

The square root of 140550985 is about 11855.4200684750. The cubic root of 140550985 is about 519.9297057346.

The spelling of 140550985 in words is "one hundred forty million, five hundred fifty thousand, nine hundred eighty-five".