859366081 has 4 divisors (see below), whose sum is σ = 982132672. Its totient is φ = 736599492.

The previous prime is 859366063. The next prime is 859366087. The reversal of 859366081 is 180663958.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 859366081 - 2⁵ = 859366049 is a prime.

It is a super-2 number, since 2×859366081² = 1477020122346597122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (859366087) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61383285 + ... + 61383298.

It is an arithmetic number, because the mean of its divisors is an integer number (245533168).

Almost surely, 2^859366081 is an apocalyptic number.

It is an amenable number.

859366081 is a deficient number, since it is larger than the sum of its proper divisors (122766591).

859366081 is a wasteful number, since it uses less digits than its factorization.

859366081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122766590.

The product of its (nonzero) digits is 311040, while the sum is 46.

The square root of 859366081 is about 29314.9463755266. The cubic root of 859366081 is about 950.7348261091.

The spelling of 859366081 in words is "eight hundred fifty-nine million, three hundred sixty-six thousand, eighty-one".