6673666 has 4 divisors (see below), whose sum is σ = 10010502. Its totient is φ = 3336832.

The previous prime is 6673637. The next prime is 6673687. The reversal of 6673666 is 6663766.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 4020025 + 2653641 = 2005^2 + 1629^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1668415 + ... + 1668418.

Almost surely, 2^6673666 is an apocalyptic number.

6673666 is a deficient number, since it is larger than the sum of its proper divisors (3336836).

6673666 is a wasteful number, since it uses less digits than its factorization.

6673666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3336835.

The product of its digits is 163296, while the sum is 40.

The square root of 6673666 is about 2583.3439569674. The cubic root of 6673666 is about 188.2730489871.

The spelling of 6673666 in words is "six million, six hundred seventy-three thousand, six hundred sixty-six".