649949260 has 12 divisors (see below), whose sum is σ = 1364893488. Its totient is φ = 259979696.

The previous prime is 649949243. The next prime is 649949263. The reversal of 649949260 is 62949946.

649949260 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (649949263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16248712 + ... + 16248751.

It is an arithmetic number, because the mean of its divisors is an integer number (113741124).

Almost surely, 2^649949260 is an apocalyptic number.

It is an amenable number.

649949260 is an abundant number, since it is smaller than the sum of its proper divisors (714944228).

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

649949260 is a wasteful number, since it uses less digits than its factorization.

649949260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32497472 (or 32497470 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 49.

The square root of 649949260 is about 25494.1024552738. The cubic root of 649949260 is about 866.2165647686.

The spelling of 649949260 in words is "six hundred forty-nine million, nine hundred forty-nine thousand, two hundred sixty".