40644606 has 8 divisors (see below), whose sum is σ = 81289224. Its totient is φ = 13548200.

The previous prime is 40644601. The next prime is 40644619. The reversal of 40644606 is 60644604.

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

40644606 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40644601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3387045 + ... + 3387056.

It is an arithmetic number, because the mean of its divisors is an integer number (10161153).

Almost surely, 2^40644606 is an apocalyptic number.

40644606 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

40644606 is a wasteful number, since it uses less digits than its factorization.

40644606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6774106.

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 40644606 is about 6375.3122276481. The cubic root of 40644606 is about 343.8225096186.

The spelling of 40644606 in words is "forty million, six hundred forty-four thousand, six hundred six".