648245804 has 12 divisors (see below), whose sum is σ = 1145033064. Its totient is φ = 321093504.

The previous prime is 648245791. The next prime is 648245813. The reversal of 648245804 is 408542846.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 756869 + ... + 757724.

It is an arithmetic number, because the mean of its divisors is an integer number (95419422).

Almost surely, 2^648245804 is an apocalyptic number.

It is an amenable number.

648245804 is a deficient number, since it is larger than the sum of its proper divisors (496787260).

648245804 is a wasteful number, since it uses less digits than its factorization.

648245804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1514704 (or 1514702 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 41.

The square root of 648245804 is about 25460.6717114848. The cubic root of 648245804 is about 865.4591452393.

The spelling of 648245804 in words is "six hundred forty-eight million, two hundred forty-five thousand, eight hundred four".