649648108 has 6 divisors (see below), whose sum is σ = 1136884196. Its totient is φ = 324824052.

The previous prime is 649648093. The next prime is 649648163. The reversal of 649648108 is 801846946.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81206010 + ... + 81206017.

Almost surely, 2^649648108 is an apocalyptic number.

It is an amenable number.

649648108 is a deficient number, since it is larger than the sum of its proper divisors (487236088).

649648108 is a wasteful number, since it uses less digits than its factorization.

649648108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162412031 (or 162412029 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 46.

The square root of 649648108 is about 25488.1954637828. The cubic root of 649648108 is about 866.0827578356.

The spelling of 649648108 in words is "six hundred forty-nine million, six hundred forty-eight thousand, one hundred eight".