648680326 has 24 divisors (see below), whose sum is σ = 1133007696. Its totient is φ = 277729200.

The previous prime is 648680299. The next prime is 648680371. The reversal of 648680326 is 623086846.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

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 in 11 ways as a sum of consecutive naturals, for example, 118551 + ... + 123901.

It is an arithmetic number, because the mean of its divisors is an integer number (47208654).

Almost surely, 2^648680326 is an apocalyptic number.

648680326 is a deficient number, since it is larger than the sum of its proper divisors (484327370).

648680326 is a wasteful number, since it uses less digits than its factorization.

648680326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6604 (or 6597 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 43.

The square root of 648680326 is about 25469.2034818524. The cubic root of 648680326 is about 865.6524757334.

The spelling of 648680326 in words is "six hundred forty-eight million, six hundred eighty thousand, three hundred twenty-six".