4257666 has 24 divisors (see below), whose sum is σ = 10543104. Its totient is φ = 1216440.

The previous prime is 4257647. The next prime is 4257677. The reversal of 4257666 is 6667524.

It is a self number, because there is not a number n which added to its sum of digits gives 4257666.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16770 + ... + 17021.

It is an arithmetic number, because the mean of its divisors is an integer number (439296).

Almost surely, 2^4257666 is an apocalyptic number.

4257666 is an abundant number, since it is smaller than the sum of its proper divisors (6285438).

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

4257666 is a wasteful number, since it uses less digits than its factorization.

4257666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33806 (or 33803 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 4257666 is about 2063.4112532406. The cubic root of 4257666 is about 162.0779231891.

The spelling of 4257666 in words is "four million, two hundred fifty-seven thousand, six hundred sixty-six".