40340066 has 16 divisors (see below), whose sum is σ = 65386104. Its totient is φ = 18555264.

The previous prime is 40340057. The next prime is 40340081. The reversal of 40340066 is 66004304.

It can be written as a sum of positive squares in 4 ways, for example, as 21669025 + 18671041 = 4655^2 + 4321^2 .

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, 5660 + ... + 10616.

Almost surely, 2^40340066 is an apocalyptic number.

40340066 is a deficient number, since it is larger than the sum of its proper divisors (25046038).

40340066 is a wasteful number, since it uses less digits than its factorization.

40340066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5285.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 40340066 is about 6351.3829990011. The cubic root of 40340066 is about 342.9616301743.

The spelling of 40340066 in words is "forty million, three hundred forty thousand, sixty-six".