40536613 has 4 divisors (see below), whose sum is σ = 43654828. Its totient is φ = 37418400.

The previous prime is 40536611. The next prime is 40536631. The reversal of 40536613 is 31663504.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21325924 + 19210689 = 4618^2 + 4383^2 .

It is a cyclic number.

It is not a de Polignac number, because 40536613 - 2¹ = 40536611 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 (40536611) 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 3 ways as a sum of consecutive naturals, for example, 1559088 + ... + 1559113.

It is an arithmetic number, because the mean of its divisors is an integer number (10913707).

Almost surely, 2^40536613 is an apocalyptic number.

It is an amenable number.

40536613 is a deficient number, since it is larger than the sum of its proper divisors (3118215).

40536613 is a wasteful number, since it uses less digits than its factorization.

40536613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3118214.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 40536613 is about 6366.8369697991. The cubic root of 40536613 is about 343.5177265913.

The spelling of 40536613 in words is "forty million, five hundred thirty-six thousand, six hundred thirteen".