40665007 has 8 divisors (see below), whose sum is σ = 41040000. Its totient is φ = 40292184.

The previous prime is 40664993. The next prime is 40665017. The reversal of 40665007 is 70056604.

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 40665007 - 2⁷ = 40664879 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 (40665017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81244 + ... + 81742.

It is an arithmetic number, because the mean of its divisors is an integer number (5130000).

Almost surely, 2^40665007 is an apocalyptic number.

40665007 is a deficient number, since it is larger than the sum of its proper divisors (374993).

40665007 is a wasteful number, since it uses less digits than its factorization.

40665007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1085.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 40665007 is about 6376.9120269924. The cubic root of 40665007 is about 343.8800256537.

The spelling of 40665007 in words is "forty million, six hundred sixty-five thousand, seven".