6417666 has 24 divisors (see below), whose sum is σ = 14142960. Its totient is φ = 2102616.

The previous prime is 6417661. The next prime is 6417673. The reversal of 6417666 is 6667146.

It is a self number, because there is not a number n which added to its sum of digits gives 6417666.

It is not an unprimeable number, because it can be changed into a prime (6417661) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1960 + ... + 4083.

It is an arithmetic number, because the mean of its divisors is an integer number (589290).

Almost surely, 2^6417666 is an apocalyptic number.

6417666 is an abundant number, since it is smaller than the sum of its proper divisors (7725294).

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

6417666 is a wasteful number, since it uses less digits than its factorization.

6417666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6110 (or 6107 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 6417666 is about 2533.3112718338. The cubic root of 6417666 is about 185.8342262129.

Subtracting from 6417666 its product of digits (36288), we obtain a triangular number (6381378 = T₃₅₇₂).

The spelling of 6417666 in words is "six million, four hundred seventeen thousand, six hundred sixty-six".