172669 has 8 divisors (see below), whose sum is σ = 209088. Its totient is φ = 139200.

The previous prime is 172663. The next prime is 172673. The reversal of 172669 is 966271.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 172669 - 2⁷ = 172541 is a prime.

It is a super-2 number, since 2×172669² = 59629167122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 172669.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 607 + ... + 844.

It is an arithmetic number, because the mean of its divisors is an integer number (26136).

2¹⁷²⁶⁶⁹ is an apocalyptic number.

It is an amenable number.

172669 is a deficient number, since it is larger than the sum of its proper divisors (36419).

172669 is a wasteful number, since it uses less digits than its factorization.

172669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1475.

The product of its digits is 4536, while the sum is 31.

The square root of 172669 is about 415.5345954310. The cubic root of 172669 is about 55.6849872567.

It can be divided in two parts, 172 and 669, that added together give a square (841 = 29²).

The spelling of 172669 in words is "one hundred seventy-two thousand, six hundred sixty-nine".