40781606 has 8 divisors (see below), whose sum is σ = 64770840. Its totient is φ = 19191328.

The previous prime is 40781597. The next prime is 40781633. The reversal of 40781606 is 60618704.

40781606 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 599696 + ... + 599763.

It is an arithmetic number, because the mean of its divisors is an integer number (8096355).

Almost surely, 2^40781606 is an apocalyptic number.

40781606 is a deficient number, since it is larger than the sum of its proper divisors (23989234).

40781606 is a wasteful number, since it uses less digits than its factorization.

40781606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1199478.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 40781606 is about 6386.0477605480. The cubic root of 40781606 is about 344.2083817223.

The spelling of 40781606 in words is "forty million, seven hundred eighty-one thousand, six hundred six".