2663666045 has 8 divisors (see below), whose sum is σ = 3200560440. Its totient is φ = 2128158720.

The previous prime is 2663666039. The next prime is 2663666059. The reversal of 2663666045 is 5406663662.

It can be written as a sum of positive squares in 4 ways, for example, as 89321401 + 2574344644 = 9451^2 + 50738^2 .

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

It is not a de Polignac number, because 2663666045 - 2⁶ = 2663665981 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2663665987 and 2663666005.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 342536 + ... + 350225.

It is an arithmetic number, because the mean of its divisors is an integer number (400070055).

Almost surely, 2^2663666045 is an apocalyptic number.

It is an amenable number.

2663666045 is a deficient number, since it is larger than the sum of its proper divisors (536894395).

2663666045 is an equidigital number, since it uses as much as digits as its factorization.

2663666045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 693535.

The product of its (nonzero) digits is 933120, while the sum is 44.

The square root of 2663666045 is about 51610.7163775121. The cubic root of 2663666045 is about 1386.2022247749.

The spelling of 2663666045 in words is "two billion, six hundred sixty-three million, six hundred sixty-six thousand, forty-five".