40665701 has 8 divisors (see below), whose sum is σ = 42070560. Its totient is φ = 39277008.

The previous prime is 40665697. The next prime is 40665721. The reversal of 40665701 is 10756604.

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 40665701 - 2² = 40665697 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40665721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1190 + ... + 9096.

It is an arithmetic number, because the mean of its divisors is an integer number (5258820).

Almost surely, 2^40665701 is an apocalyptic number.

It is an amenable number.

40665701 is a deficient number, since it is larger than the sum of its proper divisors (1404859).

40665701 is a wasteful number, since it uses less digits than its factorization.

40665701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8083.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 40665701 is about 6376.9664418123. The cubic root of 40665701 is about 343.8819818924.

The spelling of 40665701 in words is "forty million, six hundred sixty-five thousand, seven hundred one".