2664480645 has 12 divisors (see below), whose sum is σ = 4618433196. Its totient is φ = 1421056320.

The previous prime is 2664480631. The next prime is 2664480649. The reversal of 2664480645 is 5460844662.

It can be written as a sum of positive squares in 2 ways, for example, as 1429520481 + 1234960164 = 37809^2 + 35142^2 .

It is not a de Polignac number, because 2664480645 - 2⁴ = 2664480629 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 59210681 = 2664480645 / (2 + 6 + 6 + 4 + 4 + 8 + 0 + 6 + 4 + 5).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2664480645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2664480649) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29605296 + ... + 29605385.

It is an arithmetic number, because the mean of its divisors is an integer number (384869433).

Almost surely, 2^2664480645 is an apocalyptic number.

It is an amenable number.

2664480645 is a deficient number, since it is larger than the sum of its proper divisors (1953952551).

2664480645 is a wasteful number, since it uses less digits than its factorization.

2664480645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59210692 (or 59210689 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 45.

The square root of 2664480645 is about 51618.6075461165. The cubic root of 2664480645 is about 1386.3435194195.

The spelling of 2664480645 in words is "two billion, six hundred sixty-four million, four hundred eighty thousand, six hundred forty-five".