40661305 has 8 divisors (see below), whose sum is σ = 50367744. Its totient is φ = 31479600.

The previous prime is 40661293. The next prime is 40661317. The reversal of 40661305 is 50316604.

40661305 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (40661293) and next prime (40661317).

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

It is not a de Polignac number, because 40661305 - 2¹⁵ = 40628537 is a prime.

It is a super-3 number, since 3×40661305³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40661305.

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 7 ways as a sum of consecutive naturals, for example, 131011 + ... + 131320.

It is an arithmetic number, because the mean of its divisors is an integer number (6295968).

Almost surely, 2^40661305 is an apocalyptic number.

It is an amenable number.

40661305 is a deficient number, since it is larger than the sum of its proper divisors (9706439).

40661305 is a wasteful number, since it uses less digits than its factorization.

40661305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262367.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 40661305 is about 6376.6217545029. The cubic root of 40661305 is about 343.8695901255.

Adding to 40661305 its reverse (50316604), we get a palindrome (90977909).

The spelling of 40661305 in words is "forty million, six hundred sixty-one thousand, three hundred five".