6690547 has 8 divisors (see below), whose sum is σ = 6829200. Its totient is φ = 6553440.

The previous prime is 6690517. The next prime is 6690557. The reversal of 6690547 is 7450966.

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 6690547 - 2¹¹ = 6688499 is a prime.

It is a Duffinian number.

6690547 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6690517) 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 7 ways as a sum of consecutive naturals, for example, 12097 + ... + 12637.

It is an arithmetic number, because the mean of its divisors is an integer number (853650).

Almost surely, 2^6690547 is an apocalyptic number.

6690547 is a deficient number, since it is larger than the sum of its proper divisors (138653).

6690547 is a wasteful number, since it uses less digits than its factorization.

6690547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 773.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 6690547 is about 2586.6091703232. The cubic root of 6690547 is about 188.4316605269.

The spelling of 6690547 in words is "six million, six hundred ninety thousand, five hundred forty-seven".