63564605 has 16 divisors (see below), whose sum is σ = 82346544. Its totient is φ = 46824960.

The previous prime is 63564593. The next prime is 63564619. The reversal of 63564605 is 50646536.

It can be written as a sum of positive squares in 8 ways, for example, as 6017209 + 57547396 = 2453^2 + 7586^2 .

It is not a de Polignac number, because 63564605 - 2⁸ = 63564349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32927 + ... + 34803.

It is an arithmetic number, because the mean of its divisors is an integer number (5146659).

Almost surely, 2^63564605 is an apocalyptic number.

63564605 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

63564605 is a deficient number, since it is larger than the sum of its proper divisors (18781939).

63564605 is a wasteful number, since it uses less digits than its factorization.

63564605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2416.

The product of its (nonzero) digits is 64800, while the sum is 35.

The square root of 63564605 is about 7972.7413729532. The cubic root of 63564605 is about 399.0908623205.

The spelling of 63564605 in words is "sixty-three million, five hundred sixty-four thousand, six hundred five".