6448620508 has 12 divisors (see below), whose sum is σ = 12311002872. Its totient is φ = 2931191120.

The previous prime is 6448620487. The next prime is 6448620547. The reversal of 6448620508 is 8050268446.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73279735 + ... + 73279822.

It is an arithmetic number, because the mean of its divisors is an integer number (1025916906).

Almost surely, 2^6448620508 is an apocalyptic number.

It is an amenable number.

6448620508 is a deficient number, since it is larger than the sum of its proper divisors (5862382364).

6448620508 is a wasteful number, since it uses less digits than its factorization.

6448620508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146559572 (or 146559570 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 43.

The square root of 6448620508 is about 80303.3032197306. The cubic root of 6448620508 is about 1861.3252693280.

The spelling of 6448620508 in words is "six billion, four hundred forty-eight million, six hundred twenty thousand, five hundred eight".