648196464 has 20 divisors (see below), whose sum is σ = 1674507656. Its totient is φ = 216065472.

The previous prime is 648196433. The next prime is 648196481. The reversal of 648196464 is 464691846.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 13504093 = 648196464 / (6 + 4 + 8 + 1 + 9 + 6 + 4 + 6 + 4).

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 6751999 + ... + 6752094.

Almost surely, 2^648196464 is an apocalyptic number.

It is an amenable number.

648196464 is an abundant number, since it is smaller than the sum of its proper divisors (1026311192).

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

648196464 is a wasteful number, since it uses less digits than its factorization.

648196464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13504104 (or 13504098 counting only the distinct ones).

The product of its digits is 995328, while the sum is 48.

The square root of 648196464 is about 25459.7027476756. The cubic root of 648196464 is about 865.4371870883.

The spelling of 648196464 in words is "six hundred forty-eight million, one hundred ninety-six thousand, four hundred sixty-four".