170987056 has 20 divisors (see below), whose sum is σ = 339368904. Its totient is φ = 83408000.

The previous prime is 170987051. The next prime is 170987057. The reversal of 170987056 is 650789071.

It is not an unprimeable number, because it can be changed into a prime (170987051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129670 + ... + 130981.

Almost surely, 2^170987056 is an apocalyptic number.

170987056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

170987056 is a deficient number, since it is larger than the sum of its proper divisors (168381848).

170987056 is a wasteful number, since it uses less digits than its factorization.

170987056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260700 (or 260694 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 43.

The square root of 170987056 is about 13076.2018950458. The cubic root of 170987056 is about 555.0359049357.

The spelling of 170987056 in words is "one hundred seventy million, nine hundred eighty-seven thousand, fifty-six".