40650661 has 8 divisors (see below), whose sum is σ = 41610240. Its totient is φ = 39702432.

The previous prime is 40650653. The next prime is 40650667. The reversal of 40650661 is 16605604.

40650661 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 cyclic number.

It is not a de Polignac number, because 40650661 - 2³ = 40650653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40650667) by changing a digit.

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, 4636 + ... + 10138.

It is an arithmetic number, because the mean of its divisors is an integer number (5201280).

Almost surely, 2^40650661 is an apocalyptic number.

It is an amenable number.

40650661 is a deficient number, since it is larger than the sum of its proper divisors (959579).

40650661 is an equidigital number, since it uses as much as digits as its factorization.

40650661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5675.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 40650661 is about 6375.7870886660. The cubic root of 40650661 is about 343.8395823385.

The spelling of 40650661 in words is "forty million, six hundred fifty thousand, six hundred sixty-one".