3201623 has 4 divisors (see below), whose sum is σ = 3340848. Its totient is φ = 3062400.

The previous prime is 3201619. The next prime is 3201641. The reversal of 3201623 is 3261023.

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

It is a cyclic number.

It is not a de Polignac number, because 3201623 - 2² = 3201619 is a prime.

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, 69578 + ... + 69623.

It is an arithmetic number, because the mean of its divisors is an integer number (835212).

Almost surely, 2^3201623 is an apocalyptic number.

3201623 is a deficient number, since it is larger than the sum of its proper divisors (139225).

3201623 is a wasteful number, since it uses less digits than its factorization.

3201623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139224.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 3201623 is about 1789.3079667849. The cubic root of 3201623 is about 147.3861689979.

Adding to 3201623 its reverse (3261023), we get a palindrome (6462646).

The spelling of 3201623 in words is "three million, two hundred one thousand, six hundred twenty-three".