649498460 has 24 divisors (see below), whose sum is σ = 1468866336. Its totient is φ = 239814720.

The previous prime is 649498459. The next prime is 649498511. The reversal of 649498460 is 64894946.

It is a junction number, because it is equal to n+sod(n) for n = 649498399 and 649498408.

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 7 ways as a sum of consecutive naturals, for example, 1248776 + ... + 1249295.

It is an arithmetic number, because the mean of its divisors is an integer number (61202764).

Almost surely, 2^649498460 is an apocalyptic number.

It is an amenable number.

649498460 is an abundant number, since it is smaller than the sum of its proper divisors (819367876).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

649498460 is a wasteful number, since it uses less digits than its factorization.

649498460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2498093 (or 2498091 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 50.

The square root of 649498460 is about 25485.2596612238. The cubic root of 649498460 is about 866.0162513151.

The spelling of 649498460 in words is "six hundred forty-nine million, four hundred ninety-eight thousand, four hundred sixty".