2720566 has 4 divisors (see below), whose sum is σ = 4080852. Its totient is φ = 1360282.

The previous prime is 2720563. The next prime is 2720579. The reversal of 2720566 is 6650272.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2720563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 680140 + ... + 680143.

It is an arithmetic number, because the mean of its divisors is an integer number (1020213).

2^2720566 is an apocalyptic number.

2720566 is a deficient number, since it is larger than the sum of its proper divisors (1360286).

2720566 is a wasteful number, since it uses less digits than its factorization.

2720566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1360285.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 2720566 is about 1649.4138352760. The cubic root of 2720566 is about 139.6003226567.

The spelling of 2720566 in words is "two million, seven hundred twenty thousand, five hundred sixty-six".