2945824666 has 4 divisors (see below), whose sum is σ = 4418737002. Its totient is φ = 1472912332.

The previous prime is 2945824663. The next prime is 2945824667. The reversal of 2945824666 is 6664285492.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2913732441 + 32092225 = 53979^2 + 5665^2 .

It is not an unprimeable number, because it can be changed into a prime (2945824663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 736456165 + ... + 736456168.

Almost surely, 2^2945824666 is an apocalyptic number.

2945824666 is a deficient number, since it is larger than the sum of its proper divisors (1472912336).

2945824666 is a wasteful number, since it uses less digits than its factorization.

2945824666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1472912335.

The product of its digits is 4976640, while the sum is 52.

The square root of 2945824666 is about 54275.4517807084. The cubic root of 2945824666 is about 1433.5151862409.

The spelling of 2945824666 in words is "two billion, nine hundred forty-five million, eight hundred twenty-four thousand, six hundred sixty-six".