170404897 has 12 divisors (see below), whose sum is σ = 189029484. Its totient is φ = 153454080.

The previous prime is 170404873. The next prime is 170404937. The reversal of 170404897 is 798404071.

It can be written as a sum of positive squares in 6 ways, for example, as 105698961 + 64705936 = 10281^2 + 8044^2 .

It is not a de Polignac number, because 170404897 - 2²³ = 162016289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (170404807) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5368 + ... + 19225.

It is an arithmetic number, because the mean of its divisors is an integer number (15752457).

Almost surely, 2^170404897 is an apocalyptic number.

It is an amenable number.

170404897 is a deficient number, since it is larger than the sum of its proper divisors (18624587).

170404897 is a wasteful number, since it uses less digits than its factorization.

170404897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24660 (or 24647 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 170404897 is about 13053.9226671526. The cubic root of 170404897 is about 554.4052791296.

The spelling of 170404897 in words is "one hundred seventy million, four hundred four thousand, eight hundred ninety-seven".