2666720804 has 12 divisors (see below), whose sum is σ = 5091012528. Its totient is φ = 1212145800.

The previous prime is 2666720803. The next prime is 2666720821. The reversal of 2666720804 is 4080276662.

It is a super-2 number, since 2×2666720804² = 14222799692972812832, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2666720803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30303602 + ... + 30303689.

It is an arithmetic number, because the mean of its divisors is an integer number (424251044).

Almost surely, 2^2666720804 is an apocalyptic number.

It is an amenable number.

2666720804 is a deficient number, since it is larger than the sum of its proper divisors (2424291724).

2666720804 is a wasteful number, since it uses less digits than its factorization.

2666720804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60607306 (or 60607304 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 41.

The square root of 2666720804 is about 51640.3021292478. The cubic root of 2666720804 is about 1386.7319328204.

The spelling of 2666720804 in words is "two billion, six hundred sixty-six million, seven hundred twenty thousand, eight hundred four".