40686612 has 12 divisors (see below), whose sum is σ = 94935456. Its totient is φ = 13562200.

The previous prime is 40686599. The next prime is 40686647. The reversal of 40686612 is 21668604.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1695264 + ... + 1695287.

It is an arithmetic number, because the mean of its divisors is an integer number (7911288).

Almost surely, 2^40686612 is an apocalyptic number.

It is an amenable number.

40686612 is an abundant number, since it is smaller than the sum of its proper divisors (54248844).

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

40686612 is a wasteful number, since it uses less digits than its factorization.

40686612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3390558 (or 3390556 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 40686612 is about 6378.6058037788. The cubic root of 40686612 is about 343.9409151272.

The spelling of 40686612 in words is "forty million, six hundred eighty-six thousand, six hundred twelve".