40568815 has 12 divisors (see below), whose sum is σ = 56631096. Its totient is φ = 27818448.

The previous prime is 40568779. The next prime is 40568821. The reversal of 40568815 is 51886504.

It is not a de Polignac number, because 40568815 - 2¹⁷ = 40437743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 82549 + ... + 83038.

It is an arithmetic number, because the mean of its divisors is an integer number (4719258).

Almost surely, 2^40568815 is an apocalyptic number.

40568815 is a deficient number, since it is larger than the sum of its proper divisors (16062281).

40568815 is a wasteful number, since it uses less digits than its factorization.

40568815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165606 (or 165599 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 37.

The square root of 40568815 is about 6369.3653530003. The cubic root of 40568815 is about 343.6086652031.

The spelling of 40568815 in words is "forty million, five hundred sixty-eight thousand, eight hundred fifteen".