648379292 has 24 divisors (see below), whose sum is σ = 1291635072. Its totient is φ = 281903600.

The previous prime is 648379283. The next prime is 648379367. The reversal of 648379292 is 292973846.

It is a self number, because there is not a number n which added to its sum of digits gives 648379292.

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 7 ways as a sum of consecutive naturals, for example, 319334 + ... + 321357.

It is an arithmetic number, because the mean of its divisors is an integer number (53818128).

Almost surely, 2^648379292 is an apocalyptic number.

It is an amenable number.

648379292 is a deficient number, since it is larger than the sum of its proper divisors (643255780).

648379292 is a wasteful number, since it uses less digits than its factorization.

648379292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640729 (or 640727 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 50.

The square root of 648379292 is about 25463.2930313422. The cubic root of 648379292 is about 865.5185468226.

The spelling of 648379292 in words is "six hundred forty-eight million, three hundred seventy-nine thousand, two hundred ninety-two".