2604166666 has 16 divisors (see below), whose sum is σ = 3969127008. Its totient is φ = 1281250000.

The previous prime is 2604166661. The next prime is 2604166723. The reversal of 2604166666 is 6666614062.

It is not an unprimeable number, because it can be changed into a prime (2604166661) 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, 10416 + ... + 72916.

It is an arithmetic number, because the mean of its divisors is an integer number (248070438).

Almost surely, 2^2604166666 is an apocalyptic number.

2604166666 is a deficient number, since it is larger than the sum of its proper divisors (1364960342).

2604166666 is a wasteful number, since it uses less digits than its factorization.

2604166666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62837.

The product of its (nonzero) digits is 373248, while the sum is 43.

The square root of 2604166666 is about 51031.0363014509. The cubic root of 2604166666 is about 1375.8030202554.

The spelling of 2604166666 in words is "two billion, six hundred four million, one hundred sixty-six thousand, six hundred sixty-six".