2616321604 has 24 divisors (see below), whose sum is σ = 4932621848. Its totient is φ = 1207077120.

The previous prime is 2616321571. The next prime is 2616321611. The reversal of 2616321604 is 4061236162.

It can be written as a sum of positive squares in 4 ways, for example, as 73136704 + 2543184900 = 8552^2 + 50430^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157504 + ... + 173320.

Almost surely, 2^2616321604 is an apocalyptic number.

It is an amenable number.

2616321604 is a deficient number, since it is larger than the sum of its proper divisors (2316300244).

2616321604 is a wasteful number, since it uses less digits than its factorization.

2616321604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19015 (or 19013 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 2616321604 is about 51149.9912414460. The cubic root of 2616321604 is about 1377.9402170302.

Adding to 2616321604 its reverse (4061236162), we get a palindrome (6677557766).

The spelling of 2616321604 in words is "two billion, six hundred sixteen million, three hundred twenty-one thousand, six hundred four".