850127661 has 24 divisors (see below), whose sum is σ = 1260220416. Its totient is φ = 551914560.

The previous prime is 850127639. The next prime is 850127669. The reversal of 850127661 is 166721058.

It is not a de Polignac number, because 850127661 - 2⁹ = 850127149 is a prime.

It is a super-3 number, since 3×850127661³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (850127669) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 235476 + ... + 239058.

It is an arithmetic number, because the mean of its divisors is an integer number (52509184).

Almost surely, 2^850127661 is an apocalyptic number.

It is an amenable number.

850127661 is a deficient number, since it is larger than the sum of its proper divisors (410092755).

850127661 is a wasteful number, since it uses less digits than its factorization.

850127661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4273 (or 4270 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 850127661 is about 29156.9487601155. The cubic root of 850127661 is about 947.3156580317.

The spelling of 850127661 in words is "eight hundred fifty million, one hundred twenty-seven thousand, six hundred sixty-one".