6666606 has 48 divisors (see below), whose sum is σ = 15434640. Its totient is φ = 2073600.

The previous prime is 6666599. The next prime is 6666613. The reversal of 6666606 is 6066666.

It is an interprime number because it is at equal distance from previous prime (6666599) and next prime (6666613).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34446 + ... + 34638.

It is an arithmetic number, because the mean of its divisors is an integer number (321555).

Almost surely, 2^6666606 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6666606, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7717320).

6666606 is an abundant number, since it is smaller than the sum of its proper divisors (8768034).

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

6666606 is a wasteful number, since it uses less digits than its factorization.

6666606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321 (or 318 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 36.

The square root of 6666606 is about 2581.9771493954. The cubic root of 6666606 is about 188.2066348793.

It can be divided in two parts, 666660 and 6, that added together give a palindrome (666666).

The spelling of 6666606 in words is "six million, six hundred sixty-six thousand, six hundred six".