6623708045 has 18 divisors (see below), whose sum is σ = 8447454366. Its totient is φ = 4984933120.

The previous prime is 6623708033. The next prime is 6623708053. The reversal of 6623708045 is 5408073266.

It is a happy number.

It can be written as a sum of positive squares in 9 ways, for example, as 1007554564 + 5616153481 = 31742^2 + 74941^2 .

It is not a de Polignac number, because 6623708045 - 2⁴ = 6623708029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6623707993 and 6623708011.

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 17 ways as a sum of consecutive naturals, for example, 3092675 + ... + 3094815.

Almost surely, 2^6623708045 is an apocalyptic number.

It is an amenable number.

6623708045 is a deficient number, since it is larger than the sum of its proper divisors (1823746321).

6623708045 is an frugal number, since it uses more digits than its factorization.

6623708045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4321 (or 2163 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 41.

The square root of 6623708045 is about 81386.1661770598. The cubic root of 6623708045 is about 1878.0207823267.

The spelling of 6623708045 in words is "six billion, six hundred twenty-three million, seven hundred eight thousand, forty-five".