648263292 has 24 divisors (see below), whose sum is σ = 1544798976. Its totient is φ = 211489968.

The previous prime is 648263281. The next prime is 648263293. The reversal of 648263292 is 292362846.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648263293) 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 7 ways as a sum of consecutive naturals, for example, 574138 + ... + 575265.

It is an arithmetic number, because the mean of its divisors is an integer number (64366624).

Almost surely, 2^648263292 is an apocalyptic number.

It is an amenable number.

648263292 is an abundant number, since it is smaller than the sum of its proper divisors (896535684).

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

648263292 is a wasteful number, since it uses less digits than its factorization.

648263292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1149457 (or 1149455 counting only the distinct ones).

The product of its digits is 248832, while the sum is 42.

The square root of 648263292 is about 25461.0151407991. The cubic root of 648263292 is about 865.4669277879.

The spelling of 648263292 in words is "six hundred forty-eight million, two hundred sixty-three thousand, two hundred ninety-two".