648703732 has 6 divisors (see below), whose sum is σ = 1135231538. Its totient is φ = 324351864.

The previous prime is 648703711. The next prime is 648703751. The reversal of 648703732 is 237307846.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 554885136 + 93818596 = 23556^2 + 9686^2 .

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 as a sum of consecutive naturals, namely, 81087963 + ... + 81087970.

Almost surely, 2^648703732 is an apocalyptic number.

It is an amenable number.

648703732 is a deficient number, since it is larger than the sum of its proper divisors (486527806).

648703732 is a wasteful number, since it uses less digits than its factorization.

648703732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162175937 (or 162175935 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 40.

The square root of 648703732 is about 25469.6629738204. The cubic root of 648703732 is about 865.6628872399.

The spelling of 648703732 in words is "six hundred forty-eight million, seven hundred three thousand, seven hundred thirty-two".