850866651 has 6 divisors (see below), whose sum is σ = 1229029620. Its totient is φ = 567244428.

The previous prime is 850866619. The next prime is 850866661. The reversal of 850866651 is 156668058.

It is not a de Polignac number, because 850866651 - 2⁵ = 850866619 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 850866597 and 850866606.

It is not an unprimeable number, because it can be changed into a prime (850866661) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 47270361 + ... + 47270378.

It is an arithmetic number, because the mean of its divisors is an integer number (204838270).

Almost surely, 2^850866651 is an apocalyptic number.

850866651 is a deficient number, since it is larger than the sum of its proper divisors (378162969).

850866651 is a wasteful number, since it uses less digits than its factorization.

850866651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94540745 (or 94540742 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 45.

The square root of 850866651 is about 29169.6186296633. The cubic root of 850866651 is about 947.5900693867.

The spelling of 850866651 in words is "eight hundred fifty million, eight hundred sixty-six thousand, six hundred fifty-one".