2604696066 has 72 divisors (see below), whose sum is σ = 6495832512. Its totient is φ = 738914400.

The previous prime is 2604696053. The next prime is 2604696079. The reversal of 2604696066 is 6606964062.

It is an interprime number because it is at equal distance from previous prime (2604696053) and next prime (2604696079).

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 4127571 + ... + 4128201.

It is an arithmetic number, because the mean of its divisors is an integer number (90219896).

Almost surely, 2^2604696066 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2604696066, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3247916256).

2604696066 is an abundant number, since it is smaller than the sum of its proper divisors (3891136446).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2604696066 is a wasteful number, since it uses less digits than its factorization.

2604696066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1008 (or 824 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 45.

The square root of 2604696066 is about 51036.2230773399. The cubic root of 2604696066 is about 1375.8962427538.

The spelling of 2604696066 in words is "two billion, six hundred four million, six hundred ninety-six thousand, sixty-six".