659673 has 24 divisors (see below), whose sum is σ = 1122368. Its totient is φ = 365472.

The previous prime is 659671. The next prime is 659689. The reversal of 659673 is 376956.

It is a happy number.

It is not a de Polignac number, because 659673 - 2¹ = 659671 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (659671) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2190 + ... + 2472.

2⁶⁵⁹⁶⁷³ is an apocalyptic number.

659673 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

It is an amenable number.

659673 is a deficient number, since it is larger than the sum of its proper divisors (462695).

659673 is a wasteful number, since it uses less digits than its factorization.

659673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333 (or 330 counting only the distinct ones).

The product of its digits is 34020, while the sum is 36.

The square root of 659673 is about 812.2025609415. The cubic root of 659673 is about 87.0514954749.

The spelling of 659673 in words is "six hundred fifty-nine thousand, six hundred seventy-three".