40667065 has 4 divisors (see below), whose sum is σ = 48800484. Its totient is φ = 32533648.

The previous prime is 40667023. The next prime is 40667083. The reversal of 40667065 is 56076604.

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 13927824 + 26739241 = 3732^2 + 5171^2 .

It is a cyclic number.

It is not a de Polignac number, because 40667065 - 2¹¹ = 40665017 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40667065.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4066702 + ... + 4066711.

It is an arithmetic number, because the mean of its divisors is an integer number (12200121).

Almost surely, 2^40667065 is an apocalyptic number.

It is an amenable number.

40667065 is a deficient number, since it is larger than the sum of its proper divisors (8133419).

40667065 is an equidigital number, since it uses as much as digits as its factorization.

40667065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8133418.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 40667065 is about 6377.0733883185. The cubic root of 40667065 is about 343.8858266540.

The spelling of 40667065 in words is "forty million, six hundred sixty-seven thousand, sixty-five".