6666616 has 48 divisors (see below), whose sum is σ = 14076720. Its totient is φ = 2956800.

The previous prime is 6666613. The next prime is 6666617. The reversal of 6666616 is 6166666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6666613) 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 11 ways as a sum of consecutive naturals, for example, 68680 + ... + 68776.

It is an arithmetic number, because the mean of its divisors is an integer number (293265).

Almost surely, 2^6666616 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6666616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7038360).

6666616 is an abundant number, since it is smaller than the sum of its proper divisors (7410104).

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

6666616 is a wasteful number, since it uses less digits than its factorization.

6666616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196 (or 181 counting only the distinct ones).

The product of its digits is 46656, while the sum is 37.

The square root of 6666616 is about 2581.9790858952. The cubic root of 6666616 is about 188.2067289834.

The spelling of 6666616 in words is "six million, six hundred sixty-six thousand, six hundred sixteen".