171604673 has 2 divisors, whose sum is σ = 171604674. Its totient is φ = 171604672.

The previous prime is 171604649. The next prime is 171604753. The reversal of 171604673 is 376406171.

171604673 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 149401729 + 22202944 = 12223^2 + 4712^2 .

It is an emirp because it is prime and its reverse (376406171) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 171604673 - 2²⁴ = 154827457 is a prime.

It is not a weakly prime, because it can be changed into another prime (171604073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85802336 + 85802337.

It is an arithmetic number, because the mean of its divisors is an integer number (85802337).

Almost surely, 2^171604673 is an apocalyptic number.

It is an amenable number.

171604673 is a deficient number, since it is larger than the sum of its proper divisors (1).

171604673 is an equidigital number, since it uses as much as digits as its factorization.

171604673 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 171604673 is about 13099.7966778115. The cubic root of 171604673 is about 555.7033778743.

The spelling of 171604673 in words is "one hundred seventy-one million, six hundred four thousand, six hundred seventy-three".