861266201 has 8 divisors (see below), whose sum is σ = 871033800. Its totient is φ = 851516928.

The previous prime is 861266171. The next prime is 861266207. The reversal of 861266201 is 102662168.

861266201 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 4182025 + 857084176 = 2045^2 + 29276^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 861266201 - 2²⁶ = 794157337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (861266207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104375 + ... + 112323.

It is an arithmetic number, because the mean of its divisors is an integer number (108879225).

Almost surely, 2^861266201 is an apocalyptic number.

It is an amenable number.

861266201 is a deficient number, since it is larger than the sum of its proper divisors (9767599).

861266201 is a wasteful number, since it uses less digits than its factorization.

861266201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9163.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 861266201 is about 29347.3372045915. The cubic root of 861266201 is about 951.4350245808.

The spelling of 861266201 in words is "eight hundred sixty-one million, two hundred sixty-six thousand, two hundred one".