40013065 has 8 divisors (see below), whose sum is σ = 48555720. Its totient is φ = 31650432.

The previous prime is 40013041. The next prime is 40013081. The reversal of 40013065 is 56031004.

It can be written as a sum of positive squares in 4 ways, for example, as 4717584 + 35295481 = 2172^2 + 5941^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40013065 - 2⁷ = 40012937 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44514 + ... + 45403.

It is an arithmetic number, because the mean of its divisors is an integer number (6069465).

Almost surely, 2^40013065 is an apocalyptic number.

It is an amenable number.

40013065 is a deficient number, since it is larger than the sum of its proper divisors (8542655).

40013065 is an equidigital number, since it uses as much as digits as its factorization.

40013065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90011.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 40013065 is about 6325.5881149503. The cubic root of 40013065 is about 342.0324200084.

Adding to 40013065 its reverse (56031004), we get a palindrome (96044069).

The spelling of 40013065 in words is "forty million, thirteen thousand, sixty-five".