2721688 has 8 divisors (see below), whose sum is σ = 5103180. Its totient is φ = 1360840.

The previous prime is 2721671. The next prime is 2721701. The reversal of 2721688 is 8861272.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170098 + ... + 170113.

2^2721688 is an apocalyptic number.

It is an amenable number.

2721688 is a deficient number, since it is larger than the sum of its proper divisors (2381492).

2721688 is a wasteful number, since it uses less digits than its factorization.

2721688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340217 (or 340213 counting only the distinct ones).

The product of its digits is 10752, while the sum is 34.

The square root of 2721688 is about 1649.7539210440. The cubic root of 2721688 is about 139.6195110700.

The spelling of 2721688 in words is "two million, seven hundred twenty-one thousand, six hundred eighty-eight".