40536647 has 4 divisors (see below), whose sum is σ = 40551240. Its totient is φ = 40522056.

The previous prime is 40536631. The next prime is 40536667. The reversal of 40536647 is 74663504.

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

It is a cyclic number.

It is not a de Polignac number, because 40536647 - 2⁴ = 40536631 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 (40536667) 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, 1697 + ... + 9162.

It is an arithmetic number, because the mean of its divisors is an integer number (10137810).

Almost surely, 2^40536647 is an apocalyptic number.

40536647 is a deficient number, since it is larger than the sum of its proper divisors (14593).

40536647 is a wasteful number, since it uses less digits than its factorization.

40536647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14592.

The product of its (nonzero) digits is 60480, while the sum is 35.

The square root of 40536647 is about 6366.8396398841. The cubic root of 40536647 is about 343.5178226329.

The spelling of 40536647 in words is "forty million, five hundred thirty-six thousand, six hundred forty-seven".