648328499 has 16 divisors (see below), whose sum is σ = 798658560. Its totient is φ = 512503200.

The previous prime is 648328487. The next prime is 648328519. The reversal of 648328499 is 994823846.

648328499 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-648328499 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 648328499.

It is not an unprimeable number, because it can be changed into a prime (648328459) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 128474 + ... + 133424.

It is an arithmetic number, because the mean of its divisors is an integer number (49916160).

Almost surely, 2^648328499 is an apocalyptic number.

648328499 is a deficient number, since it is larger than the sum of its proper divisors (150330061).

648328499 is a wasteful number, since it uses less digits than its factorization.

648328499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6410.

The product of its digits is 2985984, while the sum is 53.

The square root of 648328499 is about 25462.2956349187. The cubic root of 648328499 is about 865.4959451180.

The spelling of 648328499 in words is "six hundred forty-eight million, three hundred twenty-eight thousand, four hundred ninety-nine".