649080966 has 8 divisors (see below), whose sum is σ = 1298161944. Its totient is φ = 216360320.

The previous prime is 649080959. The next prime is 649080977. The reversal of 649080966 is 669080946.

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

649080966 is an admirable number.

It is a super-2 number, since 2×649080966² = 842612200846986312, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54090075 + ... + 54090086.

It is an arithmetic number, because the mean of its divisors is an integer number (162270243).

Almost surely, 2^649080966 is an apocalyptic number.

649080966 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.

649080966 is a wasteful number, since it uses less digits than its factorization.

649080966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108180166.

The product of its (nonzero) digits is 559872, while the sum is 48.

The square root of 649080966 is about 25477.0674529075. The cubic root of 649080966 is about 865.8306547317.

The spelling of 649080966 in words is "six hundred forty-nine million, eighty thousand, nine hundred sixty-six".