648646703 has 4 divisors (see below), whose sum is σ = 649332600. Its totient is φ = 647960808.

The previous prime is 648646693. The next prime is 648646711. The reversal of 648646703 is 307646846.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 648646703 - 2⁸ = 648646447 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 (648646783) 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, 341528 + ... + 343421.

It is an arithmetic number, because the mean of its divisors is an integer number (162333150).

Almost surely, 2^648646703 is an apocalyptic number.

648646703 is a deficient number, since it is larger than the sum of its proper divisors (685897).

648646703 is an equidigital number, since it uses as much as digits as its factorization.

648646703 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685896.

The product of its (nonzero) digits is 580608, while the sum is 44.

The square root of 648646703 is about 25468.5434016160. The cubic root of 648646703 is about 865.6375190411.

The spelling of 648646703 in words is "six hundred forty-eight million, six hundred forty-six thousand, seven hundred three".