654172 has 6 divisors (see below), whose sum is σ = 1144808. Its totient is φ = 327084.

The previous prime is 654169. The next prime is 654187. The reversal of 654172 is 271456.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 81768 + ... + 81775.

2⁶⁵⁴¹⁷² is an apocalyptic number.

It is an amenable number.

654172 is a deficient number, since it is larger than the sum of its proper divisors (490636).

654172 is a wasteful number, since it uses less digits than its factorization.

654172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163547 (or 163545 counting only the distinct ones).

The product of its digits is 1680, while the sum is 25.

The square root of 654172 is about 808.8090009390. The cubic root of 654172 is about 86.8088461752.

The spelling of 654172 in words is "six hundred fifty-four thousand, one hundred seventy-two".