171620672 has 14 divisors (see below), whose sum is σ = 340559898. Its totient is φ = 85810304.

The previous prime is 171620663. The next prime is 171620707. The reversal of 171620672 is 276026171.

It can be written as a sum of positive squares in only one way, i.e., 170668096 + 952576 = 13064^2 + 976^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

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, 1340723 + ... + 1340850.

It is an arithmetic number, because the mean of its divisors is an integer number (24325707).

Almost surely, 2^171620672 is an apocalyptic number.

It is an amenable number.

171620672 is a deficient number, since it is larger than the sum of its proper divisors (168939226).

171620672 is an equidigital number, since it uses as much as digits as its factorization.

171620672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2681585 (or 2681575 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 171620672 is about 13100.4073219118. The cubic root of 171620672 is about 555.7206470661.

The spelling of 171620672 in words is "one hundred seventy-one million, six hundred twenty thousand, six hundred seventy-two".