2721622 has 4 divisors (see below), whose sum is σ = 4082436. Its totient is φ = 1360810.

The previous prime is 2721619. The next prime is 2721671. The reversal of 2721622 is 2261272.

2721622 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 2721593 and 2721602.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 680404 + ... + 680407.

It is an arithmetic number, because the mean of its divisors is an integer number (1020609).

2^2721622 is an apocalyptic number.

2721622 is a deficient number, since it is larger than the sum of its proper divisors (1360814).

2721622 is a wasteful number, since it uses less digits than its factorization.

2721622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1360813.

The product of its digits is 672, while the sum is 22.

The square root of 2721622 is about 1649.7339179395. The cubic root of 2721622 is about 139.6183824858.

Adding to 2721622 its reverse (2261272), we get a palindrome (4982894).

The spelling of 2721622 in words is "two million, seven hundred twenty-one thousand, six hundred twenty-two".