6665166 has 20 divisors (see below), whose sum is σ = 14935272. Its totient is φ = 2221668.

The previous prime is 6665159. The next prime is 6665167. The reversal of 6665166 is 6615666.

It is a self number, because there is not a number n which added to its sum of digits gives 6665166.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6665167) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 20410 + ... + 20733.

Almost surely, 2^6665166 is an apocalyptic number.

6665166 is an abundant number, since it is smaller than the sum of its proper divisors (8270106).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6665166 is a wasteful number, since it uses less digits than its factorization.

6665166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41157 (or 41148 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 6665166 is about 2581.6982782657. The cubic root of 6665166 is about 188.1930829025.

It can be divided in two parts, 666 and 5166, that added together give a cube (5832 = 18³).

The spelling of 6665166 in words is "six million, six hundred sixty-five thousand, one hundred sixty-six".