650775665 has 8 divisors (see below), whose sum is σ = 782537280. Its totient is φ = 519549552.

The previous prime is 650775637. The next prime is 650775673. The reversal of 650775665 is 566577056.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-650775665 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131195 + ... + 136064.

It is an arithmetic number, because the mean of its divisors is an integer number (97817160).

Almost surely, 2^650775665 is an apocalyptic number.

It is an amenable number.

650775665 is a deficient number, since it is larger than the sum of its proper divisors (131761615).

650775665 is a wasteful number, since it uses less digits than its factorization.

650775665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267751.

The product of its (nonzero) digits is 1323000, while the sum is 47.

The square root of 650775665 is about 25510.3050746164. The cubic root of 650775665 is about 866.5835382957.

The spelling of 650775665 in words is "six hundred fifty million, seven hundred seventy-five thousand, six hundred sixty-five".