648166255 has 8 divisors (see below), whose sum is σ = 848508624. Its totient is φ = 471393600.

The previous prime is 648166229. The next prime is 648166273. The reversal of 648166255 is 552661846.

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

It is not a de Polignac number, because 648166255 - 2⁵ = 648166223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 5892366 + ... + 5892475.

It is an arithmetic number, because the mean of its divisors is an integer number (106063578).

Almost surely, 2^648166255 is an apocalyptic number.

648166255 is a deficient number, since it is larger than the sum of its proper divisors (200342369).

648166255 is a wasteful number, since it uses less digits than its factorization.

648166255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11784857.

The product of its digits is 345600, while the sum is 43.

The square root of 648166255 is about 25459.1094698931. The cubic root of 648166255 is about 865.4237424001.

The spelling of 648166255 in words is "six hundred forty-eight million, one hundred sixty-six thousand, two hundred fifty-five".