648405963 has 6 divisors (see below), whose sum is σ = 936586404. Its totient is φ = 432270636.

The previous prime is 648405911. The next prime is 648405971. The reversal of 648405963 is 369504846.

It is not a de Polignac number, because 648405963 - 2⁶ = 648405899 is a prime.

It is not an unprimeable number, because it can be changed into a prime (648475963) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 36022545 + ... + 36022562.

It is an arithmetic number, because the mean of its divisors is an integer number (156097734).

Almost surely, 2^648405963 is an apocalyptic number.

648405963 is a deficient number, since it is larger than the sum of its proper divisors (288180441).

648405963 is a wasteful number, since it uses less digits than its factorization.

648405963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72045113 (or 72045110 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The square root of 648405963 is about 25463.8167406224. The cubic root of 648405963 is about 865.5304143251.

The spelling of 648405963 in words is "six hundred forty-eight million, four hundred five thousand, nine hundred sixty-three".