2645328701 has 6 divisors (see below), whose sum is σ = 2649499902. Its totient is φ = 2641161720.

The previous prime is 2645328689. The next prime is 2645328703. The reversal of 2645328701 is 1078235462.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 2396004601 + 249324100 = 48949^2 + 15790^2 .

It is not a de Polignac number, because 2645328701 - 2¹⁰ = 2645327677 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 (2645328703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1674530 + ... + 1676108.

It is an arithmetic number, because the mean of its divisors is an integer number (441583317).

Almost surely, 2^2645328701 is an apocalyptic number.

It is an amenable number.

2645328701 is a deficient number, since it is larger than the sum of its proper divisors (4171201).

2645328701 is an frugal number, since it uses more digits than its factorization.

2645328701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4219 (or 2640 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 2645328701 is about 51432.7590257416. The cubic root of 2645328701 is about 1383.0139094223.

The spelling of 2645328701 in words is "two billion, six hundred forty-five million, three hundred twenty-eight thousand, seven hundred one".