171680916 has 24 divisors (see below), whose sum is σ = 437006304. Its totient is φ = 52024480.

The previous prime is 171680893. The next prime is 171680917. The reversal of 171680916 is 619086171.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (171680917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 650175 + ... + 650438.

It is an arithmetic number, because the mean of its divisors is an integer number (18208596).

Almost surely, 2^171680916 is an apocalyptic number.

It is an amenable number.

171680916 is an abundant number, since it is smaller than the sum of its proper divisors (265325388).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

171680916 is a wasteful number, since it uses less digits than its factorization.

171680916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1300631 (or 1300629 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 39.

The square root of 171680916 is about 13102.7064379845. The cubic root of 171680916 is about 555.7856643271.

The spelling of 171680916 in words is "one hundred seventy-one million, six hundred eighty thousand, nine hundred sixteen".