171270656 has 20 divisors (see below), whose sum is σ = 342207822. Its totient is φ = 85635072.

The previous prime is 171270647. The next prime is 171270661. The reversal of 171270656 is 656072171.

It can be written as a sum of positive squares in only one way, i.e., 163430656 + 7840000 = 12784^2 + 2800^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166745 + ... + 167768.

Almost surely, 2^171270656 is an apocalyptic number.

171270656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

171270656 is a deficient number, since it is larger than the sum of its proper divisors (170937166).

171270656 is an frugal number, since it uses more digits than its factorization.

171270656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334531 (or 334515 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 35.

The square root of 171270656 is about 13087.0415296965. The cubic root of 171270656 is about 555.3425972286.

The spelling of 171270656 in words is "one hundred seventy-one million, two hundred seventy thousand, six hundred fifty-six".