140623585 has 4 divisors (see below), whose sum is σ = 168748308. Its totient is φ = 112498864.

The previous prime is 140623583. The next prime is 140623589. The reversal of 140623585 is 585326041.

140623585 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 585326041 = 853 ⋅686197.

It can be written as a sum of positive squares in 2 ways, for example, as 66129424 + 74494161 = 8132^2 + 8631^2 .

It is a cyclic number.

It is not a de Polignac number, because 140623585 - 2¹ = 140623583 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 140623585.

It is not an unprimeable number, because it can be changed into a prime (140623583) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14062354 + ... + 14062363.

It is an arithmetic number, because the mean of its divisors is an integer number (42187077).

Almost surely, 2^140623585 is an apocalyptic number.

It is an amenable number.

140623585 is a deficient number, since it is larger than the sum of its proper divisors (28124723).

140623585 is an equidigital number, since it uses as much as digits as its factorization.

140623585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28124722.

The product of its (nonzero) digits is 28800, while the sum is 34.

The square root of 140623585 is about 11858.4815638428. The cubic root of 140623585 is about 520.0192115683.

The spelling of 140623585 in words is "one hundred forty million, six hundred twenty-three thousand, five hundred eighty-five".