806742170 has 16 divisors (see below), whose sum is σ = 1563838920. Its totient is φ = 297873984.

The previous prime is 806742161. The next prime is 806742187. The reversal of 806742170 is 71247608.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 424813321 + 381928849 = 20611^2 + 19543^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 806742170.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3102725 + ... + 3102984.

Almost surely, 2^806742170 is an apocalyptic number.

806742170 is a deficient number, since it is larger than the sum of its proper divisors (757096750).

806742170 is a wasteful number, since it uses less digits than its factorization.

806742170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6205729.

The product of its (nonzero) digits is 18816, while the sum is 35.

The square root of 806742170 is about 28403.2070372344. The cubic root of 806742170 is about 930.9183398021.

Adding to 806742170 its reverse (71247608), we get a palindrome (877989778).

The spelling of 806742170 in words is "eight hundred six million, seven hundred forty-two thousand, one hundred seventy".