2604001601 has 4 divisors (see below), whose sum is σ = 2604632772. Its totient is φ = 2603370432.

The previous prime is 2604001597. The next prime is 2604001613. The reversal of 2604001601 is 1061004062.

It is a happy number.

2604001601 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 168480400 + 2435521201 = 12980^2 + 49351^2 .

It is a cyclic number.

It is not a de Polignac number, because 2604001601 - 2² = 2604001597 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2604001681) 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, 309356 + ... + 317661.

It is an arithmetic number, because the mean of its divisors is an integer number (651158193).

Almost surely, 2^2604001601 is an apocalyptic number.

It is an amenable number.

2604001601 is a deficient number, since it is larger than the sum of its proper divisors (631171).

2604001601 is an equidigital number, since it uses as much as digits as its factorization.

2604001601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631170.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 2604001601 is about 51029.4189757242. The cubic root of 2604001601 is about 1375.7739512347.

Adding to 2604001601 its reverse (1061004062), we get a palindrome (3665005663).

The spelling of 2604001601 in words is "two billion, six hundred four million, one thousand, six hundred one".