63664603 has 4 divisors (see below), whose sum is σ = 63778248. Its totient is φ = 63550960.

The previous prime is 63664597. The next prime is 63664613. The reversal of 63664603 is 30646636.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-63664603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63664613) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 55978 + ... + 57103.

It is an arithmetic number, because the mean of its divisors is an integer number (15944562).

Almost surely, 2^63664603 is an apocalyptic number.

63664603 is a deficient number, since it is larger than the sum of its proper divisors (113645).

63664603 is a wasteful number, since it uses less digits than its factorization.

63664603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113644.

The product of its (nonzero) digits is 46656, while the sum is 34.

The square root of 63664603 is about 7979.0101516416. The cubic root of 63664603 is about 399.3000320768.

The spelling of 63664603 in words is "sixty-three million, six hundred sixty-four thousand, six hundred three".