40660013 has 4 divisors (see below), whose sum is σ = 40839360. Its totient is φ = 40480668.

The previous prime is 40660007. The next prime is 40660031. The reversal of 40660013 is 31006604.

40660013 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.

It is a cyclic number.

It is not a de Polignac number, because 40660013 - 2⁸ = 40659757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40660033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89333 + ... + 89786.

It is an arithmetic number, because the mean of its divisors is an integer number (10209840).

Almost surely, 2^40660013 is an apocalyptic number.

It is an amenable number.

40660013 is a deficient number, since it is larger than the sum of its proper divisors (179347).

40660013 is a wasteful number, since it uses less digits than its factorization.

40660013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179346.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 40660013 is about 6376.5204461367. The cubic root of 40660013 is about 343.8659479714.

Adding to 40660013 its reverse (31006604), we get a palindrome (71666617).

The spelling of 40660013 in words is "forty million, six hundred sixty thousand, thirteen".