648682942 has 4 divisors (see below), whose sum is σ = 973024416. Its totient is φ = 324341470.

The previous prime is 648682939. The next prime is 648682987. The reversal of 648682942 is 249286846.

It is a semiprime because it is the product of two primes.

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 as a sum of consecutive naturals, namely, 162170734 + ... + 162170737.

It is an arithmetic number, because the mean of its divisors is an integer number (243256104).

Almost surely, 2^648682942 is an apocalyptic number.

648682942 is a deficient number, since it is larger than the sum of its proper divisors (324341474).

648682942 is a wasteful number, since it uses less digits than its factorization.

648682942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324341473.

The product of its digits is 1327104, while the sum is 49.

The square root of 648682942 is about 25469.2548379414. The cubic root of 648682942 is about 865.6536394005.

The spelling of 648682942 in words is "six hundred forty-eight million, six hundred eighty-two thousand, nine hundred forty-two".