40665145 has 8 divisors (see below), whose sum is σ = 49150080. Its totient is φ = 32297520.

The previous prime is 40665091. The next prime is 40665167. The reversal of 40665145 is 54156604.

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

It is not a de Polignac number, because 40665145 - 2⁷ = 40665017 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28561 + ... + 29950.

It is an arithmetic number, because the mean of its divisors is an integer number (6143760).

Almost surely, 2^40665145 is an apocalyptic number.

It is an amenable number.

40665145 is a deficient number, since it is larger than the sum of its proper divisors (8484935).

40665145 is a wasteful number, since it uses less digits than its factorization.

40665145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58655.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 40665145 is about 6376.9228472673. The cubic root of 40665145 is about 343.8804146482.

The spelling of 40665145 in words is "forty million, six hundred sixty-five thousand, one hundred forty-five".