140664533 has 4 divisors (see below), whose sum is σ = 140871168. Its totient is φ = 140457900.

The previous prime is 140664521. The next prime is 140664541. The reversal of 140664533 is 335466041.

140664533 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 a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 335466041 = 199 ⋅1685759.

It is a cyclic number.

It is not a de Polignac number, because 140664533 - 2¹² = 140660437 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 140664533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140664583) 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, 102293 + ... + 103658.

It is an arithmetic number, because the mean of its divisors is an integer number (35217792).

Almost surely, 2^140664533 is an apocalyptic number.

It is an amenable number.

140664533 is a deficient number, since it is larger than the sum of its proper divisors (206635).

140664533 is an equidigital number, since it uses as much as digits as its factorization.

140664533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206634.

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 140664533 is about 11860.2079661362. The cubic root of 140664533 is about 520.0696812440.

The spelling of 140664533 in words is "one hundred forty million, six hundred sixty-four thousand, five hundred thirty-three".