170238961 has 8 divisors (see below), whose sum is σ = 180870120. Its totient is φ = 159925248.

The previous prime is 170238953. The next prime is 170238979. The reversal of 170238961 is 169832071.

170238961 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 93238336 + 77000625 = 9656^2 + 8775^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 170238961 - 2³ = 170238953 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 170238961.

It is not an unprimeable number, because it can be changed into a prime (170238911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78256 + ... + 80401.

It is an arithmetic number, because the mean of its divisors is an integer number (22608765).

Almost surely, 2^170238961 is an apocalyptic number.

It is an amenable number.

170238961 is a deficient number, since it is larger than the sum of its proper divisors (10631159).

170238961 is a wasteful number, since it uses less digits than its factorization.

170238961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158723.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 170238961 is about 13047.5653284435. The cubic root of 170238961 is about 554.2252653834.

The spelling of 170238961 in words is "one hundred seventy million, two hundred thirty-eight thousand, nine hundred sixty-one".