40665612 has 24 divisors (see below), whose sum is σ = 102185776. Its totient is φ = 12512448.

The previous prime is 40665607. The next prime is 40665629. The reversal of 40665612 is 21656604.

It is a self number, because there is not a number n which added to its sum of digits gives 40665612.

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, 130183 + ... + 130494.

Almost surely, 2^40665612 is an apocalyptic number.

It is an amenable number.

40665612 is an abundant number, since it is smaller than the sum of its proper divisors (61520164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40665612 is a wasteful number, since it uses less digits than its factorization.

40665612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260697 (or 260695 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 40665612 is about 6376.9594635688. The cubic root of 40665612 is about 343.8817310216.

The spelling of 40665612 in words is "forty million, six hundred sixty-five thousand, six hundred twelve".