40661606 has 4 divisors (see below), whose sum is σ = 60992412. Its totient is φ = 20330802.

The previous prime is 40661591. The next prime is 40661623. The reversal of 40661606 is 60616604.

40661606 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

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 as a sum of consecutive naturals, namely, 10165400 + ... + 10165403.

It is an arithmetic number, because the mean of its divisors is an integer number (15248103).

Almost surely, 2^40661606 is an apocalyptic number.

40661606 is a deficient number, since it is larger than the sum of its proper divisors (20330806).

40661606 is a wasteful number, since it uses less digits than its factorization.

40661606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20330805.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 40661606 is about 6376.6453562982. The cubic root of 40661606 is about 343.8704386348.

The spelling of 40661606 in words is "forty million, six hundred sixty-one thousand, six hundred six".