64503163 has 4 divisors (see below), whose sum is σ = 66727440. Its totient is φ = 62278888.

The previous prime is 64503137. The next prime is 64503181. The reversal of 64503163 is 36130546.

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-64503163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64503113) 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, 1112095 + ... + 1112152.

It is an arithmetic number, because the mean of its divisors is an integer number (16681860).

Almost surely, 2^64503163 is an apocalyptic number.

64503163 is a deficient number, since it is larger than the sum of its proper divisors (2224277).

64503163 is a wasteful number, since it uses less digits than its factorization.

64503163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2224276.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 64503163 is about 8031.3861194690. The cubic root of 64503163 is about 401.0455210832.

The spelling of 64503163 in words is "sixty-four million, five hundred three thousand, one hundred sixty-three".