140564005 has 8 divisors (see below), whose sum is σ = 168795000. Its totient is φ = 112372416.

The previous prime is 140563993. The next prime is 140564009. The reversal of 140564005 is 500465041.

It can be written as a sum of positive squares in 4 ways, for example, as 2313441 + 138250564 = 1521^2 + 11758^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 140564005 - 2⁷ = 140563877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140564009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1330 + ... + 16819.

It is an arithmetic number, because the mean of its divisors is an integer number (21099375).

Almost surely, 2^140564005 is an apocalyptic number.

It is an amenable number.

140564005 is a deficient number, since it is larger than the sum of its proper divisors (28230995).

140564005 is a wasteful number, since it uses less digits than its factorization.

140564005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19703.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 140564005 is about 11855.9691716873. The cubic root of 140564005 is about 519.9457598751.

The spelling of 140564005 in words is "one hundred forty million, five hundred sixty-four thousand, five".