2604843664 has 10 divisors (see below), whose sum is σ = 5046884630. Its totient is φ = 1302421824.

The previous prime is 2604843653. The next prime is 2604843667. The reversal of 2604843664 is 4663484062.

It can be written as a sum of positive squares in only one way, i.e., 2601816064 + 3027600 = 51008^2 + 1740^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2604843664.

It is not an unprimeable number, because it can be changed into a prime (2604843667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81401349 + ... + 81401380.

It is an arithmetic number, because the mean of its divisors is an integer number (504688463).

Almost surely, 2^2604843664 is an apocalyptic number.

It is an amenable number.

2604843664 is a deficient number, since it is larger than the sum of its proper divisors (2442040966).

2604843664 is a wasteful number, since it uses less digits than its factorization.

2604843664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162802737 (or 162802731 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 43.

The square root of 2604843664 is about 51037.6690690317. The cubic root of 2604843664 is about 1375.9222311600.

The spelling of 2604843664 in words is "two billion, six hundred four million, eight hundred forty-three thousand, six hundred sixty-four".