170434661 has 2 divisors, whose sum is σ = 170434662. Its totient is φ = 170434660.

The previous prime is 170434651. The next prime is 170434687. The reversal of 170434661 is 166434071.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 136445761 + 33988900 = 11681^2 + 5830^2 .

It is a cyclic number.

It is not a de Polignac number, because 170434661 - 2⁶ = 170434597 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (170434601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85217330 + 85217331.

It is an arithmetic number, because the mean of its divisors is an integer number (85217331).

Almost surely, 2^170434661 is an apocalyptic number.

It is an amenable number.

170434661 is a deficient number, since it is larger than the sum of its proper divisors (1).

170434661 is an equidigital number, since it uses as much as digits as its factorization.

170434661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 170434661 is about 13055.0626578351. The cubic root of 170434661 is about 554.4375558978.

The spelling of 170434661 in words is "one hundred seventy million, four hundred thirty-four thousand, six hundred sixty-one".