2721568 has 12 divisors (see below), whose sum is σ = 5358150. Its totient is φ = 1360768.

The previous prime is 2721557. The next prime is 2721577. The reversal of 2721568 is 8651272.

It can be written as a sum of positive squares in only one way, i.e., 2347024 + 374544 = 1532^2 + 612^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42493 + ... + 42556.

2^2721568 is an apocalyptic number.

It is an amenable number.

2721568 is a deficient number, since it is larger than the sum of its proper divisors (2636582).

2721568 is an equidigital number, since it uses as much as digits as its factorization.

2721568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85059 (or 85051 counting only the distinct ones).

The product of its digits is 6720, while the sum is 31.

The square root of 2721568 is about 1649.7175515827. The cubic root of 2721568 is about 139.6174590852.

The spelling of 2721568 in words is "two million, seven hundred twenty-one thousand, five hundred sixty-eight".