2601604 has 6 divisors (see below), whose sum is σ = 4552814.
Its totient is φ = 1300800.
The previous prime is 2601601. The next prime is 2601607. The reversal of 2601604 is 4061062.
Adding to 2601604 its reverse (4061062), we get a palindrome (6662666).
It is an interprime number because it is at equal distance from previous prime (2601601) and next prime (2601607).
It can be written as a sum of positive squares in only one way, i.e., 1435204 + 1166400 = 1198^2 + 1080^2
It is not an unprimeable number, because it can be changed into a prime (2601601) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325197 + ... + 325204.
22601604 is an apocalyptic number.
It is an amenable number.
2601604 is a deficient number, since it is larger than the sum of its proper divisors (1951210).
2601604 is a wasteful number, since it uses less digits than its factorization.
2601604 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 650405 (or 650403 counting only the distinct ones).
The product of its (nonzero) digits is 288, while the sum is 19.
The square root of 2601604 is about 1612.9488522579.
The cubic root of 2601604 is about 137.5351579517.
The spelling of 2601604 in words is "two million, six hundred one thousand, six hundred four".