6669291 has 8 divisors (see below), whose sum is σ = 8905680. Its totient is φ = 4439552.

The previous prime is 6669281. The next prime is 6669293. The reversal of 6669291 is 1929666.

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 6669291 - 2⁷ = 6669163 is a prime.

6669291 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6669293) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1591 + ... + 3983.

It is an arithmetic number, because the mean of its divisors is an integer number (1113210).

Almost surely, 2^6669291 is an apocalyptic number.

6669291 is a deficient number, since it is larger than the sum of its proper divisors (2236389).

6669291 is a wasteful number, since it uses less digits than its factorization.

6669291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3325.

The product of its digits is 34992, while the sum is 39.

The square root of 6669291 is about 2582.4970474330. The cubic root of 6669291 is about 188.2318984586.

The spelling of 6669291 in words is "six million, six hundred sixty-nine thousand, two hundred ninety-one".