3201663 has 4 divisors (see below), whose sum is σ = 4268888. Its totient is φ = 2134440.

The previous prime is 3201643. The next prime is 3201689. The reversal of 3201663 is 3661023.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 3201663 - 2¹³ = 3193471 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3201643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 533608 + ... + 533613.

It is an arithmetic number, because the mean of its divisors is an integer number (1067222).

Almost surely, 2^3201663 is an apocalyptic number.

3201663 is a deficient number, since it is larger than the sum of its proper divisors (1067225).

3201663 is a wasteful number, since it uses less digits than its factorization.

3201663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1067224.

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 3201663 is about 1789.3191442557. The cubic root of 3201663 is about 147.3867827931.

Adding to 3201663 its reverse (3661023), we get a palindrome (6862686).

The spelling of 3201663 in words is "three million, two hundred one thousand, six hundred sixty-three".