648408867 has 8 divisors (see below), whose sum is σ = 867362496. Its totient is φ = 430863912.

The previous prime is 648408857. The next prime is 648408881. The reversal of 648408867 is 768804846.

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

It is not a de Polignac number, because 648408867 - 2²⁸ = 379973411 is a prime.

It is not an unprimeable number, because it can be changed into a prime (648408857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 351093 + ... + 352934.

It is an arithmetic number, because the mean of its divisors is an integer number (108420312).

Almost surely, 2^648408867 is an apocalyptic number.

648408867 is a deficient number, since it is larger than the sum of its proper divisors (218953629).

648408867 is a wasteful number, since it uses less digits than its factorization.

648408867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704337.

The product of its (nonzero) digits is 2064384, while the sum is 51.

The square root of 648408867 is about 25463.8737626466. The cubic root of 648408867 is about 865.5317064665.

The spelling of 648408867 in words is "six hundred forty-eight million, four hundred eight thousand, eight hundred sixty-seven".