2666832720 has 80 divisors (see below), whose sum is σ = 8490647040. Its totient is φ = 691932672.

The previous prime is 2666832719. The next prime is 2666832739. The reversal of 2666832720 is 272386662.

2666832720 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×2666832720² = 14223993512925196800, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141280 + ... + 159039.

It is an arithmetic number, because the mean of its divisors is an integer number (106133088).

Almost surely, 2^2666832720 is an apocalyptic number.

2666832720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2666832720 is an abundant number, since it is smaller than the sum of its proper divisors (5823814320).

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

2666832720 is a wasteful number, since it uses less digits than its factorization.

2666832720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300372 (or 300366 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 42.

The square root of 2666832720 is about 51641.3857288900. The cubic root of 2666832720 is about 1386.7513318415.

The spelling of 2666832720 in words is "two billion, six hundred sixty-six million, eight hundred thirty-two thousand, seven hundred twenty".