2604001613 has 2 divisors, whose sum is σ = 2604001614. Its totient is φ = 2604001612.

The previous prime is 2604001597. The next prime is 2604001663. The reversal of 2604001613 is 3161004062.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2319674569 + 284327044 = 48163^2 + 16862^2 .

It is a cyclic number.

It is not a de Polignac number, because 2604001613 - 2⁴ = 2604001597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2604001663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1302000806 + 1302000807.

It is an arithmetic number, because the mean of its divisors is an integer number (1302000807).

Almost surely, 2^2604001613 is an apocalyptic number.

It is an amenable number.

2604001613 is a deficient number, since it is larger than the sum of its proper divisors (1).

2604001613 is an equidigital number, since it uses as much as digits as its factorization.

2604001613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 2604001613 is about 51029.4190933034. The cubic root of 2604001613 is about 1375.7739533480.

Adding to 2604001613 its reverse (3161004062), we get a palindrome (5765005675).

The spelling of 2604001613 in words is "two billion, six hundred four million, one thousand, six hundred thirteen".