2945665 has 16 divisors (see below), whose sum is σ = 3769920. Its totient is φ = 2203200.

The previous prime is 2945659. The next prime is 2945669. The reversal of 2945665 is 5665492.

It is a de Polignac number, because none of the positive numbers 2^k-2945665 is a prime.

Its product of digits (64800) is a multiple of the sum of its prime divisors (432).

It is not an unprimeable number, because it can be changed into a prime (2945669) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9442 + ... + 9748.

It is an arithmetic number, because the mean of its divisors is an integer number (235620).

2^2945665 is an apocalyptic number.

It is an amenable number.

2945665 is a deficient number, since it is larger than the sum of its proper divisors (824255).

2945665 is a wasteful number, since it uses less digits than its factorization.

2945665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432.

The product of its digits is 64800, while the sum is 37.

The square root of 2945665 is about 1716.2939724884. The cubic root of 2945665 is about 143.3489286558.

The spelling of 2945665 in words is "two million, nine hundred forty-five thousand, six hundred sixty-five".