648899653 has 4 divisors (see below), whose sum is σ = 649075680. Its totient is φ = 648723628.

The previous prime is 648899651. The next prime is 648899659. The reversal of 648899653 is 356998846.

648899653 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 648899653 - 2¹ = 648899651 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648899651) 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, 82363 + ... + 89896.

It is an arithmetic number, because the mean of its divisors is an integer number (162268920).

Almost surely, 2^648899653 is an apocalyptic number.

It is an amenable number.

648899653 is a deficient number, since it is larger than the sum of its proper divisors (176027).

648899653 is a wasteful number, since it uses less digits than its factorization.

648899653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176026.

The product of its digits is 11197440, while the sum is 58.

The square root of 648899653 is about 25473.5088474281. The cubic root of 648899653 is about 865.7500274133.

The spelling of 648899653 in words is "six hundred forty-eight million, eight hundred ninety-nine thousand, six hundred fifty-three".