40665512 has 16 divisors (see below), whose sum is σ = 76735860. Its totient is φ = 20202624.

The previous prime is 40665497. The next prime is 40665517. The reversal of 40665512 is 21556604.

It can be written as a sum of positive squares in 2 ways, for example, as 40627876 + 37636 = 6374^2 + 194^2 .

It is not an unprimeable number, because it can be changed into a prime (40665517) 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, 14933 + ... + 17444.

Almost surely, 2^40665512 is an apocalyptic number.

It is an amenable number.

40665512 is a deficient number, since it is larger than the sum of its proper divisors (36070348).

40665512 is a wasteful number, since it uses less digits than its factorization.

40665512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32540 (or 32536 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 40665512 is about 6376.9516228367. The cubic root of 40665512 is about 343.8814491437.

The spelling of 40665512 in words is "forty million, six hundred sixty-five thousand, five hundred twelve".