648760873 has 4 divisors (see below), whose sum is σ = 659756880. Its totient is φ = 637764868.

The previous prime is 648760859. The next prime is 648760883. The reversal of 648760873 is 378067846.

648760873 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 648760873 - 2⁵ = 648760841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (648760813) 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, 5497915 + ... + 5498032.

It is an arithmetic number, because the mean of its divisors is an integer number (164939220).

Almost surely, 2^648760873 is an apocalyptic number.

It is an amenable number.

648760873 is a deficient number, since it is larger than the sum of its proper divisors (10996007).

648760873 is a wasteful number, since it uses less digits than its factorization.

648760873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10996006.

The product of its (nonzero) digits is 1354752, while the sum is 49.

The square root of 648760873 is about 25470.7846954113. The cubic root of 648760873 is about 865.6883037684.

The spelling of 648760873 in words is "six hundred forty-eight million, seven hundred sixty thousand, eight hundred seventy-three".