6655560166 has 4 divisors (see below), whose sum is σ = 9983340252. Its totient is φ = 3327780082.

The previous prime is 6655560157. The next prime is 6655560169. The reversal of 6655560166 is 6610655566.

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

It is a super-2 number, since 2×6655560166² = 88592962246491895112, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6655560169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1663890040 + ... + 1663890043.

It is an arithmetic number, because the mean of its divisors is an integer number (2495835063).

Almost surely, 2^6655560166 is an apocalyptic number.

6655560166 is a deficient number, since it is larger than the sum of its proper divisors (3327780086).

6655560166 is a wasteful number, since it uses less digits than its factorization.

6655560166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3327780085.

The product of its (nonzero) digits is 972000, while the sum is 46.

The square root of 6655560166 is about 81581.6165934459. The cubic root of 6655560166 is about 1881.0263150916.

The spelling of 6655560166 in words is "six billion, six hundred fifty-five million, five hundred sixty thousand, one hundred sixty-six".