2163601 has 6 divisors (see below), whose sum is σ = 2378306. Its totient is φ = 1966800.

The previous prime is 2163593. The next prime is 2163613. The reversal of 2163601 is 1063612.

It is the 601-st star number.

It can be written as a sum of positive squares in only one way, i.e., 1742400 + 421201 = 1320^2 + 649^2 .

It is not a de Polignac number, because 2163601 - 2³ = 2163593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2163671) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 8820 + ... + 9061.

2^2163601 is an apocalyptic number.

It is an amenable number.

2163601 is a deficient number, since it is larger than the sum of its proper divisors (214705).

2163601 is a wasteful number, since it uses less digits than its factorization.

2163601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17903 (or 17892 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 2163601 is about 1470.9184205795. The cubic root of 2163601 is about 129.3378759579.

The spelling of 2163601 in words is "two million, one hundred sixty-three thousand, six hundred one".