6655447 has 4 divisors (see below), whose sum is σ = 6660616. Its totient is φ = 6650280.

The previous prime is 6655423. The next prime is 6655531. The reversal of 6655447 is 7445566.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 6655447 - 2¹¹ = 6653399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6655547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1072 + ... + 3802.

It is an arithmetic number, because the mean of its divisors is an integer number (1665154).

Almost surely, 2^6655447 is an apocalyptic number.

6655447 is a deficient number, since it is larger than the sum of its proper divisors (5169).

6655447 is a wasteful number, since it uses less digits than its factorization.

6655447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5168.

The product of its digits is 100800, while the sum is 37.

The square root of 6655447 is about 2579.8153034665. The cubic root of 6655447 is about 188.1015653859.

The spelling of 6655447 in words is "six million, six hundred fifty-five thousand, four hundred forty-seven".