648000553 has 4 divisors (see below), whose sum is σ = 652349700. Its totient is φ = 643651408.

The previous prime is 648000527. The next prime is 648000593. The reversal of 648000553 is 355000846.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 83320384 + 564680169 = 9128^2 + 23763^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-648000553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (648000593) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2174350 + ... + 2174647.

It is an arithmetic number, because the mean of its divisors is an integer number (163087425).

Almost surely, 2^648000553 is an apocalyptic number.

It is an amenable number.

648000553 is a deficient number, since it is larger than the sum of its proper divisors (4349147).

648000553 is a wasteful number, since it uses less digits than its factorization.

648000553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4349146.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 648000553 is about 25455.8549846592. The cubic root of 648000553 is about 865.3499883461.

The spelling of 648000553 in words is "six hundred forty-eight million, five hundred fifty-three", and thus it is an aban number.