2604641566 has 16 divisors (see below), whose sum is σ = 4020497280. Its totient is φ = 1264615200.

The previous prime is 2604641551. The next prime is 2604641569. The reversal of 2604641566 is 6651464062.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2604641569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3091 + ... + 72241.

It is an arithmetic number, because the mean of its divisors is an integer number (251281080).

Almost surely, 2^2604641566 is an apocalyptic number.

2604641566 is a deficient number, since it is larger than the sum of its proper divisors (1415855714).

2604641566 is a wasteful number, since it uses less digits than its factorization.

2604641566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69699.

The product of its (nonzero) digits is 207360, while the sum is 40.

The square root of 2604641566 is about 51035.6891400518. The cubic root of 2604641566 is about 1375.8866463855.

The spelling of 2604641566 in words is "two billion, six hundred four million, six hundred forty-one thousand, five hundred sixty-six".