170404873 has 2 divisors, whose sum is σ = 170404874. Its totient is φ = 170404872.

The previous prime is 170404867. The next prime is 170404937. The reversal of 170404873 is 378404071.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85525504 + 84879369 = 9248^2 + 9213^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-170404873 is a prime.

It is a super-2 number, since 2×170404873² = 58075641484292258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (170404813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85202436 + 85202437.

It is an arithmetic number, because the mean of its divisors is an integer number (85202437).

Almost surely, 2^170404873 is an apocalyptic number.

It is an amenable number.

170404873 is a deficient number, since it is larger than the sum of its proper divisors (1).

170404873 is an equidigital number, since it uses as much as digits as its factorization.

170404873 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18816, while the sum is 34.

The square root of 170404873 is about 13053.9217478886. The cubic root of 170404873 is about 554.4052531019.

The spelling of 170404873 in words is "one hundred seventy million, four hundred four thousand, eight hundred seventy-three".