2720667 has 16 divisors (see below), whose sum is σ = 3888000. Its totient is φ = 1687104.

The previous prime is 2720623. The next prime is 2720671. The reversal of 2720667 is 7660272.

2720667 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2720667 - 2⁶ = 2720603 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2720677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2959 + ... + 3767.

It is an arithmetic number, because the mean of its divisors is an integer number (243000).

2^2720667 is an apocalyptic number.

2720667 is a deficient number, since it is larger than the sum of its proper divisors (1167333).

2720667 is a wasteful number, since it uses less digits than its factorization.

2720667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 890.

The product of its (nonzero) digits is 7056, while the sum is 30.

The square root of 2720667 is about 1649.4444519292. Note that the first 4 decimals coincide. The cubic root of 2720667 is about 139.6020501720.

It can be divided in two parts, 27 and 20667, that multiplied together give a square (558009 = 747²).

The spelling of 2720667 in words is "two million, seven hundred twenty thousand, six hundred sixty-seven".