648488814 has 64 divisors (see below), whose sum is σ = 1376040960. Its totient is φ = 203448960.

The previous prime is 648488777. The next prime is 648488839. The reversal of 648488814 is 418884846.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1547497 + ... + 1547915.

It is an arithmetic number, because the mean of its divisors is an integer number (21500640).

Almost surely, 2^648488814 is an apocalyptic number.

648488814 is an abundant number, since it is smaller than the sum of its proper divisors (727552146).

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

648488814 is a wasteful number, since it uses less digits than its factorization.

648488814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 665.

The product of its digits is 1572864, while the sum is 51.

The square root of 648488814 is about 25465.4435264733. The cubic root of 648488814 is about 865.5672775509.

The spelling of 648488814 in words is "six hundred forty-eight million, four hundred eighty-eight thousand, eight hundred fourteen".