4639564 has 12 divisors (see below), whose sum is σ = 8184064. Its totient is φ = 2301264.

The previous prime is 4639561. The next prime is 4639597. The reversal of 4639564 is 4659364.

It is a happy number.

It is a super-2 number, since 2×4639564² = 43051108220192, which contains 22 as substring.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (4639561) 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 3 ways as a sum of consecutive naturals, for example, 4059 + ... + 5074.

Almost surely, 2^4639564 is an apocalyptic number.

It is an amenable number.

4639564 is a deficient number, since it is larger than the sum of its proper divisors (3544500).

4639564 is a wasteful number, since it uses less digits than its factorization.

4639564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9264 (or 9262 counting only the distinct ones).

The product of its digits is 77760, while the sum is 37.

The square root of 4639564 is about 2153.9647165170. The cubic root of 4639564 is about 166.7857939430.

The spelling of 4639564 in words is "four million, six hundred thirty-nine thousand, five hundred sixty-four".