140236564 has 24 divisors (see below), whose sum is σ = 270742248. Its totient is φ = 63144960.

The previous prime is 140236559. The next prime is 140236567. The reversal of 140236564 is 465632041.

140236564 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 3600 + 140232964 = 60^2 + 11842^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140236567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30757 + ... + 35020.

It is an arithmetic number, because the mean of its divisors is an integer number (11280927).

Almost surely, 2^140236564 is an apocalyptic number.

It is an amenable number.

140236564 is a deficient number, since it is larger than the sum of its proper divisors (130505684).

140236564 is a wasteful number, since it uses less digits than its factorization.

140236564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65835 (or 65833 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 140236564 is about 11842.1520003756. The cubic root of 140236564 is about 519.5417116028.

The spelling of 140236564 in words is "one hundred forty million, two hundred thirty-six thousand, five hundred sixty-four".