2215604 has 6 divisors (see below), whose sum is σ = 3877314. Its totient is φ = 1107800.

The previous prime is 2215583. The next prime is 2215639. The reversal of 2215604 is 4065122.

It is a happy number.

2215604 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 1965604 + 250000 = 1402^2 + 500^2 .

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, 276947 + ... + 276954.

It is an arithmetic number, because the mean of its divisors is an integer number (646219).

2^2215604 is an apocalyptic number.

It is an amenable number.

2215604 is a deficient number, since it is larger than the sum of its proper divisors (1661710).

2215604 is a wasteful number, since it uses less digits than its factorization.

2215604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553905 (or 553903 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 2215604 is about 1488.4905105509. The cubic root of 2215604 is about 130.3659118997.

The spelling of 2215604 in words is "two million, two hundred fifteen thousand, six hundred four".