171346649 has 2 divisors, whose sum is σ = 171346650. Its totient is φ = 171346648.

The previous prime is 171346633. The next prime is 171346657. The reversal of 171346649 is 946643171.

171346649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 168480400 + 2866249 = 12980^2 + 1693^2 .

It is an emirp because it is prime and its reverse (946643171) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 171346649 - 2⁴ = 171346633 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (171346949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85673324 + 85673325.

It is an arithmetic number, because the mean of its divisors is an integer number (85673325).

Almost surely, 2^171346649 is an apocalyptic number.

It is an amenable number.

171346649 is a deficient number, since it is larger than the sum of its proper divisors (1).

171346649 is an equidigital number, since it uses as much as digits as its factorization.

171346649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 41.

The square root of 171346649 is about 13089.9445758949. The cubic root of 171346649 is about 555.4247204807.

The spelling of 171346649 in words is "one hundred seventy-one million, three hundred forty-six thousand, six hundred forty-nine".