40806686 has 8 divisors (see below), whose sum is σ = 61265160. Its totient is φ = 20384968.

The previous prime is 40806677. The next prime is 40806691. The reversal of 40806686 is 68660804.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

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, 6221 + ... + 10968.

It is an arithmetic number, because the mean of its divisors is an integer number (7658145).

Almost surely, 2^40806686 is an apocalyptic number.

40806686 is a deficient number, since it is larger than the sum of its proper divisors (20458474).

40806686 is a wasteful number, since it uses less digits than its factorization.

40806686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18378.

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 40806686 is about 6388.0111145802. The cubic root of 40806686 is about 344.2789280462.

The spelling of 40806686 in words is "forty million, eight hundred six thousand, six hundred eighty-six".