649671366 has 8 divisors (see below), whose sum is σ = 1299342744. Its totient is φ = 216557120.

The previous prime is 649671349. The next prime is 649671377. The reversal of 649671366 is 663176946.

649671366 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

649671366 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54139275 + ... + 54139286.

It is an arithmetic number, because the mean of its divisors is an integer number (162417843).

Almost surely, 2^649671366 is an apocalyptic number.

649671366 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

649671366 is a wasteful number, since it uses less digits than its factorization.

649671366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108278566.

The product of its digits is 979776, while the sum is 48.

The square root of 649671366 is about 25488.6517101239. The cubic root of 649671366 is about 866.0930932321.

The spelling of 649671366 in words is "six hundred forty-nine million, six hundred seventy-one thousand, three hundred sixty-six".