6669147 has 16 divisors (see below), whose sum is σ = 9105408. Its totient is φ = 4341120.

The previous prime is 6669137. The next prime is 6669161. The reversal of 6669147 is 7419666.

It is not a de Polignac number, because 6669147 - 2¹² = 6665051 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6669137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34822 + ... + 35012.

It is an arithmetic number, because the mean of its divisors is an integer number (569088).

Almost surely, 2^6669147 is an apocalyptic number.

6669147 is a deficient number, since it is larger than the sum of its proper divisors (2436261).

6669147 is a wasteful number, since it uses less digits than its factorization.

6669147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410.

The product of its digits is 54432, while the sum is 39.

The square root of 6669147 is about 2582.4691672893. The cubic root of 6669147 is about 188.2305437125.

The spelling of 6669147 in words is "six million, six hundred sixty-nine thousand, one hundred forty-seven".