6668045 has 12 divisors (see below), whose sum is σ = 8367996. Its totient is φ = 5100480.

The previous prime is 6668033. The next prime is 6668047. The reversal of 6668045 is 5408666.

It can be written as a sum of positive squares in 2 ways, for example, as 724201 + 5943844 = 851^2 + 2438^2 .

It is not a de Polignac number, because 6668045 - 2⁶ = 6667981 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6667996 and 6668014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6668047) 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, 1385 + ... + 3905.

It is an arithmetic number, because the mean of its divisors is an integer number (697333).

Almost surely, 2^6668045 is an apocalyptic number.

It is an amenable number.

6668045 is a deficient number, since it is larger than the sum of its proper divisors (1699951).

6668045 is a wasteful number, since it uses less digits than its factorization.

6668045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2572 (or 2549 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 6668045 is about 2582.2557967792. The cubic root of 6668045 is about 188.2201754957.

The spelling of 6668045 in words is "six million, six hundred sixty-eight thousand, forty-five".