850784666 has 8 divisors (see below), whose sum is σ = 1276660704. Its totient is φ = 425231100.

The previous prime is 850784657. The next prime is 850784699. The reversal of 850784666 is 666487058.

It is a happy number.

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

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 3 ways as a sum of consecutive naturals, for example, 73910 + ... + 84641.

It is an arithmetic number, because the mean of its divisors is an integer number (159582588).

Almost surely, 2^850784666 is an apocalyptic number.

850784666 is a deficient number, since it is larger than the sum of its proper divisors (425876038).

850784666 is a wasteful number, since it uses less digits than its factorization.

850784666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161236.

The product of its (nonzero) digits is 1935360, while the sum is 50.

The square root of 850784666 is about 29168.2132808988. The cubic root of 850784666 is about 947.5596334905.

The spelling of 850784666 in words is "eight hundred fifty million, seven hundred eighty-four thousand, six hundred sixty-six".