648036104 has 8 divisors (see below), whose sum is σ = 1215067710. Its totient is φ = 324018048.

The previous prime is 648036091. The next prime is 648036133. The reversal of 648036104 is 401630846.

It can be written as a sum of positive squares in only one way, i.e., 624900004 + 23136100 = 24998^2 + 4810^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40502249 + ... + 40502264.

Almost surely, 2^648036104 is an apocalyptic number.

It is an amenable number.

648036104 is a deficient number, since it is larger than the sum of its proper divisors (567031606).

648036104 is a wasteful number, since it uses less digits than its factorization.

648036104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81004519 (or 81004515 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 648036104 is about 25456.5532623723. The cubic root of 648036104 is about 865.3658131756.

It can be divided in two parts, 64803 and 6104, that added together give a palindrome (70907).

The spelling of 648036104 in words is "six hundred forty-eight million, thirty-six thousand, one hundred four".