648695313 has 12 divisors (see below), whose sum is σ = 1070862208. Its totient is φ = 370683000.

The previous prime is 648695309. The next prime is 648695323. The reversal of 648695313 is 313596846.

It is not a de Polignac number, because 648695313 - 2² = 648695309 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (648695323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5148313 + ... + 5148438.

Almost surely, 2^648695313 is an apocalyptic number.

648695313 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

It is an amenable number.

648695313 is a deficient number, since it is larger than the sum of its proper divisors (422166895).

648695313 is a wasteful number, since it uses less digits than its factorization.

648695313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10296764 (or 10296761 counting only the distinct ones).

The product of its digits is 466560, while the sum is 45.

The square root of 648695313 is about 25469.4976982272. The cubic root of 648695313 is about 865.6591423113.

The spelling of 648695313 in words is "six hundred forty-eight million, six hundred ninety-five thousand, three hundred thirteen".