649521848 has 16 divisors (see below), whose sum is σ = 1218764880. Its totient is φ = 324517888.

The previous prime is 649521823. The next prime is 649521869. The reversal of 649521848 is 848125946.

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 3 ways as a sum of consecutive naturals, for example, 18761 + ... + 40632.

It is an arithmetic number, because the mean of its divisors is an integer number (76172805).

Almost surely, 2^649521848 is an apocalyptic number.

It is an amenable number.

649521848 is a deficient number, since it is larger than the sum of its proper divisors (569243032).

649521848 is a wasteful number, since it uses less digits than its factorization.

649521848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60766 (or 60762 counting only the distinct ones).

The product of its digits is 552960, while the sum is 47.

The square root of 649521848 is about 25485.7185105698. The cubic root of 649521848 is about 866.0266460767.

The spelling of 649521848 in words is "six hundred forty-nine million, five hundred twenty-one thousand, eight hundred forty-eight".