2147564 has 6 divisors (see below), whose sum is σ = 3758244. Its totient is φ = 1073780.

The previous prime is 2147527. The next prime is 2147569. The reversal of 2147564 is 4657412.

It is a super-2 number, since 2×2147564² = 9224062268192, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2147569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 268442 + ... + 268449.

It is an arithmetic number, because the mean of its divisors is an integer number (626374).

2^2147564 is an apocalyptic number.

It is an amenable number.

2147564 is a deficient number, since it is larger than the sum of its proper divisors (1610680).

2147564 is a wasteful number, since it uses less digits than its factorization.

2147564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536895 (or 536893 counting only the distinct ones).

The product of its digits is 6720, while the sum is 29.

The square root of 2147564 is about 1465.4569253308. The cubic root of 2147564 is about 129.0175246107.

The spelling of 2147564 in words is "two million, one hundred forty-seven thousand, five hundred sixty-four".