4065663 has 8 divisors (see below), whose sum is σ = 6195328. Its totient is φ = 2323224.

The previous prime is 4065661. The next prime is 4065667. The reversal of 4065663 is 3665604.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4065663 - 2¹ = 4065661 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4065663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4065661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96781 + ... + 96822.

It is an arithmetic number, because the mean of its divisors is an integer number (774416).

Almost surely, 2^4065663 is an apocalyptic number.

4065663 is a deficient number, since it is larger than the sum of its proper divisors (2129665).

4065663 is a wasteful number, since it uses less digits than its factorization.

4065663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193613.

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 4065663 is about 2016.3489281372. The cubic root of 4065663 is about 159.6040077259.

It can be divided in two parts, 40 and 65663, that added together give a triangular number (65703 = T₃₆₂).

The spelling of 4065663 in words is "four million, sixty-five thousand, six hundred sixty-three".