63564673 has 4 divisors (see below), whose sum is σ = 63614980. Its totient is φ = 63514368.

The previous prime is 63564659. The next prime is 63564689. The reversal of 63564673 is 37646536.

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

It can be written as a sum of positive squares in 2 ways, for example, as 31438449 + 32126224 = 5607^2 + 5668^2 .

It is a cyclic number.

It is not a de Polignac number, because 63564673 - 2¹³ = 63556481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63564073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23208 + ... + 25801.

It is an arithmetic number, because the mean of its divisors is an integer number (15903745).

Almost surely, 2^63564673 is an apocalyptic number.

It is an amenable number.

63564673 is a deficient number, since it is larger than the sum of its proper divisors (50307).

63564673 is a wasteful number, since it uses less digits than its factorization.

63564673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50306.

The product of its digits is 272160, while the sum is 40.

The square root of 63564673 is about 7972.7456374827. The cubic root of 63564673 is about 399.0910046333.

The spelling of 63564673 in words is "sixty-three million, five hundred sixty-four thousand, six hundred seventy-three".