6655771 has 4 divisors (see below), whose sum is σ = 6764944. Its totient is φ = 6546600.

The previous prime is 6655769. The next prime is 6655801. The reversal of 6655771 is 1775566.

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

It is a cyclic number.

It is not a de Polignac number, because 6655771 - 2¹ = 6655769 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6655771.

It is not an unprimeable number, because it can be changed into a prime (6655751) 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 3 ways as a sum of consecutive naturals, for example, 54495 + ... + 54616.

It is an arithmetic number, because the mean of its divisors is an integer number (1691236).

Almost surely, 2^6655771 is an apocalyptic number.

6655771 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

6655771 is a deficient number, since it is larger than the sum of its proper divisors (109173).

6655771 is a wasteful number, since it uses less digits than its factorization.

6655771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109172.

The product of its digits is 44100, while the sum is 37.

The square root of 6655771 is about 2579.8780978953. The cubic root of 6655771 is about 188.1046177187.

The spelling of 6655771 in words is "six million, six hundred fifty-five thousand, seven hundred seventy-one".