170661934 has 4 divisors (see below), whose sum is σ = 255992904. Its totient is φ = 85330966.

The previous prime is 170661917. The next prime is 170661937. The reversal of 170661934 is 439166071.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 439166071 = 23 ⋅19094177.

It is a junction number, because it is equal to n+sod(n) for n = 170661893 and 170661902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (170661937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42665482 + ... + 42665485.

It is an arithmetic number, because the mean of its divisors is an integer number (63998226).

Almost surely, 2^170661934 is an apocalyptic number.

170661934 is a deficient number, since it is larger than the sum of its proper divisors (85330970).

170661934 is an equidigital number, since it uses as much as digits as its factorization.

170661934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85330969.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 170661934 is about 13063.7641589245. The cubic root of 170661934 is about 554.6838921709.

The spelling of 170661934 in words is "one hundred seventy million, six hundred sixty-one thousand, nine hundred thirty-four".