648273247 has 8 divisors (see below), whose sum is σ = 655400592. Its totient is φ = 641160000.

The previous prime is 648273191. The next prime is 648273251. The reversal of 648273247 is 742372846.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 648273247 - 2¹¹ = 648271199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648273277) 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 7 ways as a sum of consecutive naturals, for example, 107872 + ... + 113722.

It is an arithmetic number, because the mean of its divisors is an integer number (81925074).

Almost surely, 2^648273247 is an apocalyptic number.

648273247 is a deficient number, since it is larger than the sum of its proper divisors (7127345).

648273247 is a wasteful number, since it uses less digits than its factorization.

648273247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7049.

The product of its digits is 451584, while the sum is 43.

The square root of 648273247 is about 25461.2106350032. The cubic root of 648273247 is about 865.4713579216.

The spelling of 648273247 in words is "six hundred forty-eight million, two hundred seventy-three thousand, two hundred forty-seven".