648519460 has 24 divisors (see below), whose sum is σ = 1408853880. Its totient is φ = 250462464.

The previous prime is 648519449. The next prime is 648519463. The reversal of 648519460 is 64915846.

It can be written as a sum of positive squares in 4 ways, for example, as 2304 + 648517156 = 48^2 + 25466^2 .

It is not an unprimeable number, because it can be changed into a prime (648519463) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 558489 + ... + 559648.

It is an arithmetic number, because the mean of its divisors is an integer number (58702245).

Almost surely, 2^648519460 is an apocalyptic number.

It is an amenable number.

648519460 is an abundant number, since it is smaller than the sum of its proper divisors (760334420).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

648519460 is a wasteful number, since it uses less digits than its factorization.

648519460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1118175 (or 1118173 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 43.

The square root of 648519460 is about 25466.0452367461. The cubic root of 648519460 is about 865.5809122024.

The spelling of 648519460 in words is "six hundred forty-eight million, five hundred nineteen thousand, four hundred sixty".