648343485 has 24 divisors (see below), whose sum is σ = 1126269144. Its totient is φ = 345022080.

The previous prime is 648343483. The next prime is 648343511. The reversal of 648343485 is 584343846.

648343485 is a `hidden beast` number, since 64 + 83 + 434 + 85 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 52446564 + 595896921 = 7242^2 + 24411^2 .

It is not a de Polignac number, because 648343485 - 2¹ = 648343483 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 648343485.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648343483) 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 23 ways as a sum of consecutive naturals, for example, 5119 + ... + 36371.

It is an arithmetic number, because the mean of its divisors is an integer number (46927881).

Almost surely, 2^648343485 is an apocalyptic number.

It is an amenable number.

648343485 is a deficient number, since it is larger than the sum of its proper divisors (477925659).

648343485 is a wasteful number, since it uses less digits than its factorization.

648343485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31725 (or 31722 counting only the distinct ones).

The product of its digits is 1105920, while the sum is 45.

The square root of 648343485 is about 25462.5899114760. The cubic root of 648343485 is about 865.5026136625.

The spelling of 648343485 in words is "six hundred forty-eight million, three hundred forty-three thousand, four hundred eighty-five".