4245666 has 16 divisors (see below), whose sum is σ = 8514624. Its totient is φ = 1411344.

The previous prime is 4245643. The next prime is 4245679. The reversal of 4245666 is 6665424.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2196 + ... + 3648.

It is an arithmetic number, because the mean of its divisors is an integer number (532164).

Almost surely, 2^4245666 is an apocalyptic number.

4245666 is an abundant number, since it is smaller than the sum of its proper divisors (4268958).

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

4245666 is a wasteful number, since it uses less digits than its factorization.

4245666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1945.

The product of its digits is 34560, while the sum is 33.

The square root of 4245666 is about 2060.5013952919. The cubic root of 4245666 is about 161.9255106407.

The spelling of 4245666 in words is "four million, two hundred forty-five thousand, six hundred sixty-six".