2065601 has 4 divisors (see below), whose sum is σ = 2088900. Its totient is φ = 2042304.

The previous prime is 2065597. The next prime is 2065627. The reversal of 2065601 is 1065602.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1065602 = 2 ⋅532801.

It can be written as a sum of positive squares in 2 ways, for example, as 952576 + 1113025 = 976^2 + 1055^2 .

It is a cyclic number.

It is not a de Polignac number, because 2065601 - 2² = 2065597 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 (2065501) 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, 11516 + ... + 11693.

It is an arithmetic number, because the mean of its divisors is an integer number (522225).

2^2065601 is an apocalyptic number.

It is an amenable number.

2065601 is a deficient number, since it is larger than the sum of its proper divisors (23299).

2065601 is an equidigital number, since it uses as much as digits as its factorization.

2065601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23298.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 2065601 is about 1437.2198857517. The cubic root of 2065601 is about 127.3548469873.

Subtracting from 2065601 its reverse (1065602), we obtain a palindrome (999999).

The spelling of 2065601 in words is "two million, sixty-five thousand, six hundred one".