2604324645 has 36 divisors (see below), whose sum is σ = 4888131300. Its totient is φ = 1282125312.

The previous prime is 2604324643. The next prime is 2604324691. The reversal of 2604324645 is 5464234062.

2604324645 is a `hidden beast` number, since 2 + 6 + 0 + 4 + 3 + 2 + 4 + 645 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 1207284516 + 1397040129 = 34746^2 + 37377^2 .

It is not a de Polignac number, because 2604324645 - 2¹ = 2604324643 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2604324643) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 163620 + ... + 178829.

It is an arithmetic number, because the mean of its divisors is an integer number (135781425).

Almost surely, 2^2604324645 is an apocalyptic number.

It is an amenable number.

2604324645 is a deficient number, since it is larger than the sum of its proper divisors (2283806655).

2604324645 is a wasteful number, since it uses less digits than its factorization.

2604324645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342486 (or 342470 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 36.

The square root of 2604324645 is about 51032.5841497371. The cubic root of 2604324645 is about 1375.8308402349.

The spelling of 2604324645 in words is "two billion, six hundred four million, three hundred twenty-four thousand, six hundred forty-five".