649593008 has 10 divisors (see below), whose sum is σ = 1258586484. Its totient is φ = 324796496.

The previous prime is 649592927. The next prime is 649593017. The reversal of 649593008 is 800395946.

It is a self number, because there is not a number n which added to its sum of digits gives 649593008.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20299766 + ... + 20299797.

Almost surely, 2^649593008 is an apocalyptic number.

It is an amenable number.

649593008 is a deficient number, since it is larger than the sum of its proper divisors (608993476).

649593008 is a wasteful number, since it uses less digits than its factorization.

649593008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40599571 (or 40599565 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 44.

The square root of 649593008 is about 25487.1145483360. The cubic root of 649593008 is about 866.0582714978.

The spelling of 649593008 in words is "six hundred forty-nine million, five hundred ninety-three thousand, eight".