648097108 has 6 divisors (see below), whose sum is σ = 1134169946. Its totient is φ = 324048552.

The previous prime is 648097081. The next prime is 648097141. The reversal of 648097108 is 801790846.

It can be written as a sum of positive squares in only one way, i.e., 620408464 + 27688644 = 24908^2 + 5262^2 .

It is a super-2 number, since 2×648097108² = 840059722795927328, which contains 22 as substring.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 81012135 + ... + 81012142.

Almost surely, 2^648097108 is an apocalyptic number.

It is an amenable number.

648097108 is a deficient number, since it is larger than the sum of its proper divisors (486072838).

648097108 is a wasteful number, since it uses less digits than its factorization.

648097108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162024281 (or 162024279 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 43.

The square root of 648097108 is about 25457.7514325205. The cubic root of 648097108 is about 865.3929665597.

It can be divided in two parts, 64809 and 7108, that added together give a palindrome (71917).

The spelling of 648097108 in words is "six hundred forty-eight million, ninety-seven thousand, one hundred eight".