648341622689 has 4 divisors (see below), whose sum is σ = 648415991040. Its totient is φ = 648267254340.

The previous prime is 648341622661. The next prime is 648341622701. The reversal of 648341622689 is 986226143846.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 648341622689 - 2⁸ = 648341622433 is a prime.

It is a super-2 number, since 2×648341622689² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (648341622659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37171097 + ... + 37188534.

It is an arithmetic number, because the mean of its divisors is an integer number (162103997760).

Almost surely, 2^648341622689 is an apocalyptic number.

It is an amenable number.

648341622689 is a deficient number, since it is larger than the sum of its proper divisors (74368351).

648341622689 is an equidigital number, since it uses as much as digits as its factorization.

648341622689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74368350.

The product of its digits is 23887872, while the sum is 59.

The spelling of 648341622689 in words is "six hundred forty-eight billion, three hundred forty-one million, six hundred twenty-two thousand, six hundred eighty-nine".