648067432 has 16 divisors (see below), whose sum is σ = 1247968260. Its totient is φ = 315275904.

The previous prime is 648067417. The next prime is 648067471. The reversal of 648067432 is 234760846.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 647498916 + 568516 = 25446^2 + 754^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1094413 + ... + 1095004.

Almost surely, 2^648067432 is an apocalyptic number.

It is an amenable number.

648067432 is a deficient number, since it is larger than the sum of its proper divisors (599900828).

648067432 is a wasteful number, since it uses less digits than its factorization.

648067432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2189460 (or 2189456 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 40.

The square root of 648067432 is about 25457.1685778289. The cubic root of 648067432 is about 865.3797577399.

The spelling of 648067432 in words is "six hundred forty-eight million, sixty-seven thousand, four hundred thirty-two".