172670 has 16 divisors (see below), whose sum is σ = 321408. Its totient is φ = 66720.

The previous prime is 172663. The next prime is 172673. The reversal of 172670 is 76271.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172673) by changing a digit.

172670 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32 + ... + 588.

It is an arithmetic number, because the mean of its divisors is an integer number (20088).

2¹⁷²⁶⁷⁰ is an apocalyptic number.

172670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

172670 is a deficient number, since it is larger than the sum of its proper divisors (148738).

172670 is a wasteful number, since it uses less digits than its factorization.

172670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595.

The product of its (nonzero) digits is 588, while the sum is 23.

The square root of 172670 is about 415.5357986985. The cubic root of 172670 is about 55.6850947550.

The spelling of 172670 in words is "one hundred seventy-two thousand, six hundred seventy".