648987704 has 16 divisors (see below), whose sum is σ = 1217580120. Its totient is φ = 324299680.

The previous prime is 648987701. The next prime is 648987763. The reversal of 648987704 is 407789846.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648987701) 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, 9542 + ... + 37269.

Almost surely, 2^648987704 is an apocalyptic number.

It is an amenable number.

648987704 is a deficient number, since it is larger than the sum of its proper divisors (568592416).

648987704 is a wasteful number, since it uses less digits than its factorization.

648987704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48550 (or 48546 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 53.

The square root of 648987704 is about 25475.2370744612. The cubic root of 648987704 is about 865.7891843192.

The spelling of 648987704 in words is "six hundred forty-eight million, nine hundred eighty-seven thousand, seven hundred four".