648617275 has 12 divisors (see below), whose sum is σ = 805019904. Its totient is φ = 518420000.

The previous prime is 648617257. The next prime is 648617297. The reversal of 648617275 is 572716846.

It is a happy number.

It is not a de Polignac number, because 648617275 - 2⁵ = 648617243 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17505 + ... + 40045.

It is an arithmetic number, because the mean of its divisors is an integer number (67084992).

Almost surely, 2^648617275 is an apocalyptic number.

648617275 is a deficient number, since it is larger than the sum of its proper divisors (156402629).

648617275 is a wasteful number, since it uses less digits than its factorization.

648617275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23702 (or 23697 counting only the distinct ones).

The product of its digits is 564480, while the sum is 46.

The square root of 648617275 is about 25467.9656627694. The cubic root of 648617275 is about 865.6244280082.

The spelling of 648617275 in words is "six hundred forty-eight million, six hundred seventeen thousand, two hundred seventy-five".