850673665 has 4 divisors (see below), whose sum is σ = 1020808404. Its totient is φ = 680538928.

The previous prime is 850673627. The next prime is 850673671. The reversal of 850673665 is 566376058.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 674129296 + 176544369 = 25964^2 + 13287^2 .

It is a cyclic number.

It is not a de Polignac number, because 850673665 - 2¹⁵ = 850640897 is a prime.

It is a Duffinian 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, 85067362 + ... + 85067371.

It is an arithmetic number, because the mean of its divisors is an integer number (255202101).

Almost surely, 2^850673665 is an apocalyptic number.

It is an amenable number.

850673665 is a deficient number, since it is larger than the sum of its proper divisors (170134739).

850673665 is a wasteful number, since it uses less digits than its factorization.

850673665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170134738.

The product of its (nonzero) digits is 907200, while the sum is 46.

The square root of 850673665 is about 29166.3104454437. The cubic root of 850673665 is about 947.5184226547.

The spelling of 850673665 in words is "eight hundred fifty million, six hundred seventy-three thousand, six hundred sixty-five".