170238641 has 2 divisors, whose sum is σ = 170238642. Its totient is φ = 170238640.

The previous prime is 170238637. The next prime is 170238643. The reversal of 170238641 is 146832071.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 108160000 + 62078641 = 10400^2 + 7879^2 .

It is a cyclic number.

It is not a de Polignac number, because 170238641 - 2² = 170238637 is a prime.

Together with 170238643, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 170238598 and 170238607.

It is not a weakly prime, because it can be changed into another prime (170238643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85119320 + 85119321.

It is an arithmetic number, because the mean of its divisors is an integer number (85119321).

Almost surely, 2^170238641 is an apocalyptic number.

It is an amenable number.

170238641 is a deficient number, since it is larger than the sum of its proper divisors (1).

170238641 is an equidigital number, since it uses as much as digits as its factorization.

170238641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 170238641 is about 13047.5530656135. The cubic root of 170238641 is about 554.2249181221.

The spelling of 170238641 in words is "one hundred seventy million, two hundred thirty-eight thousand, six hundred forty-one".