40666061 has 8 divisors (see below), whose sum is σ = 42913920. Its totient is φ = 38428992.

The previous prime is 40666051. The next prime is 40666063. The reversal of 40666061 is 16066604.

40666061 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 a de Polignac number, because none of the positive numbers 2^k-40666061 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 (40666063) 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, 5756 + ... + 10698.

It is an arithmetic number, because the mean of its divisors is an integer number (5364240).

Almost surely, 2^40666061 is an apocalyptic number.

It is an amenable number.

40666061 is a deficient number, since it is larger than the sum of its proper divisors (2247859).

40666061 is a wasteful number, since it uses less digits than its factorization.

40666061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5395.

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

The square root of 40666061 is about 6376.9946683371. The cubic root of 40666061 is about 343.8829966472.

The spelling of 40666061 in words is "forty million, six hundred sixty-six thousand, sixty-one".