4245665 has 16 divisors (see below), whose sum is σ = 5443200. Its totient is φ = 3168000.

The previous prime is 4245643. The next prime is 4245679. The reversal of 4245665 is 5665424.

It is not a de Polignac number, because 4245665 - 2⁶ = 4245601 is a prime.

It is a Curzon 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 15 ways as a sum of consecutive naturals, for example, 16790 + ... + 17040.

It is an arithmetic number, because the mean of its divisors is an integer number (340200).

Almost surely, 2^4245665 is an apocalyptic number.

It is an amenable number.

4245665 is a deficient number, since it is larger than the sum of its proper divisors (1197535).

4245665 is a wasteful number, since it uses less digits than its factorization.

4245665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472.

The product of its digits is 28800, while the sum is 32.

The square root of 4245665 is about 2060.5011526325. The cubic root of 4245665 is about 161.9254979277.

It can be divided in two parts, 424566 and 5, that multiplied together give a triangular number (2122830 = T₂₀₆₀).

The spelling of 4245665 in words is "four million, two hundred forty-five thousand, six hundred sixty-five".