2666921360 has 20 divisors (see below), whose sum is σ = 6200592348. Its totient is φ = 1066768512.

The previous prime is 2666921357. The next prime is 2666921407. The reversal of 2666921360 is 631296662.

It can be written as a sum of positive squares in 2 ways, for example, as 1083199744 + 1583721616 = 32912^2 + 39796^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×2666921360² = 14224939080848499200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16668179 + ... + 16668338.

Almost surely, 2^2666921360 is an apocalyptic number.

2666921360 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2666921360 is an abundant number, since it is smaller than the sum of its proper divisors (3533670988).

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

2666921360 is a wasteful number, since it uses less digits than its factorization.

2666921360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33336530 (or 33336524 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 41.

The square root of 2666921360 is about 51642.2439481477. The cubic root of 2666921360 is about 1386.7666959193.

The spelling of 2666921360 in words is "two billion, six hundred sixty-six million, nine hundred twenty-one thousand, three hundred sixty".