649824163 has 4 divisors (see below), whose sum is σ = 658976688. Its totient is φ = 640671640.

The previous prime is 649824151. The next prime is 649824233. The reversal of 649824163 is 361428946.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 649824163 - 2⁹ = 649823651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (649824143) 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, 4576156 + ... + 4576297.

It is an arithmetic number, because the mean of its divisors is an integer number (164744172).

Almost surely, 2^649824163 is an apocalyptic number.

649824163 is a deficient number, since it is larger than the sum of its proper divisors (9152525).

649824163 is an equidigital number, since it uses as much as digits as its factorization.

649824163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9152524.

The product of its digits is 248832, while the sum is 43.

The square root of 649824163 is about 25491.6488874298. The cubic root of 649824163 is about 866.1609870730.

The spelling of 649824163 in words is "six hundred forty-nine million, eight hundred twenty-four thousand, one hundred sixty-three".