859066641 has 20 divisors (see below), whose sum is σ = 1287016500. Its totient is φ = 571051296.

The previous prime is 859066613. The next prime is 859066643. The reversal of 859066641 is 146660958.

It can be written as a sum of positive squares in 2 ways, for example, as 615238416 + 243828225 = 24804^2 + 15615^2 .

It is not a de Polignac number, because 859066641 - 2⁹ = 859066129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (859066643) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 13075 + ... + 43463.

It is an arithmetic number, because the mean of its divisors is an integer number (64350825).

Almost surely, 2^859066641 is an apocalyptic number.

859066641 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

It is an amenable number.

859066641 is a deficient number, since it is larger than the sum of its proper divisors (427949859).

859066641 is a wasteful number, since it uses less digits than its factorization.

859066641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30750 (or 30741 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 859066641 is about 29309.8386382457. The cubic root of 859066641 is about 950.6243876844.

The spelling of 859066641 in words is "eight hundred fifty-nine million, sixty-six thousand, six hundred forty-one".