648193476 has 72 divisors (see below), whose sum is σ = 1836243136. Its totient is φ = 174297600.

The previous prime is 648193463. The next prime is 648193487. The reversal of 648193476 is 674391846.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10926 + ... + 37626.

Almost surely, 2^648193476 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 648193476, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (918121568).

648193476 is an abundant number, since it is smaller than the sum of its proper divisors (1188049660).

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

648193476 is a wasteful number, since it uses less digits than its factorization.

648193476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26749 (or 26730 counting only the distinct ones).

The product of its digits is 870912, while the sum is 48.

The square root of 648193476 is about 25459.6440666401. The cubic root of 648193476 is about 865.4358572804.

The spelling of 648193476 in words is "six hundred forty-eight million, one hundred ninety-three thousand, four hundred seventy-six".