6662674945 has 8 divisors (see below), whose sum is σ = 8035795944. Its totient is φ = 5303082624.

The previous prime is 6662674873. The next prime is 6662674951. The reversal of 6662674945 is 5494762666.

It can be written as a sum of positive squares in 4 ways, for example, as 4128962049 + 2533712896 = 64257^2 + 50336^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 6662674945 - 2¹³ = 6662666753 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3381084 + ... + 3383053.

It is an arithmetic number, because the mean of its divisors is an integer number (1004474493).

Almost surely, 2^6662674945 is an apocalyptic number.

It is an amenable number.

6662674945 is a deficient number, since it is larger than the sum of its proper divisors (1373120999).

6662674945 is a wasteful number, since it uses less digits than its factorization.

6662674945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6764339.

The product of its digits is 13063680, while the sum is 55.

The square root of 6662674945 is about 81625.2102294383. The cubic root of 6662674945 is about 1881.6963473750.

The spelling of 6662674945 in words is "six billion, six hundred sixty-two million, six hundred seventy-four thousand, nine hundred forty-five".