648916479 has 6 divisors (see below), whose sum is σ = 937323816. Its totient is φ = 432610980.

The previous prime is 648916439. The next prime is 648916487. The reversal of 648916479 is 974619846.

It is not a de Polignac number, because 648916479 - 2⁸ = 648916223 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648916439) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 36050907 + ... + 36050924.

It is an arithmetic number, because the mean of its divisors is an integer number (156220636).

Almost surely, 2^648916479 is an apocalyptic number.

648916479 is a deficient number, since it is larger than the sum of its proper divisors (288407337).

648916479 is a wasteful number, since it uses less digits than its factorization.

648916479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72101837 (or 72101834 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 54.

The square root of 648916479 is about 25473.8391099575. The cubic root of 648916479 is about 865.7575103289.

The spelling of 648916479 in words is "six hundred forty-eight million, nine hundred sixteen thousand, four hundred seventy-nine".