648349948 has 12 divisors (see below), whose sum is σ = 1136845080. Its totient is φ = 323537072.

The previous prime is 648349883. The next prime is 648349951. The reversal of 648349948 is 849943846.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157186 + ... + 161257.

It is an arithmetic number, because the mean of its divisors is an integer number (94737090).

Almost surely, 2^648349948 is an apocalyptic number.

It is an amenable number.

648349948 is a deficient number, since it is larger than the sum of its proper divisors (488495132).

648349948 is a wasteful number, since it uses less digits than its factorization.

648349948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318956 (or 318954 counting only the distinct ones).

The product of its digits is 5971968, while the sum is 55.

The square root of 648349948 is about 25462.7168228373. The cubic root of 648349948 is about 865.5054895685.

The spelling of 648349948 in words is "six hundred forty-eight million, three hundred forty-nine thousand, nine hundred forty-eight".