659992 has 8 divisors (see below), whose sum is σ = 1237500. Its totient is φ = 329992.

The previous prime is 659983. The next prime is 659999. The reversal of 659992 is 299956.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (659999) by changing a digit.

659992 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 as a sum of consecutive naturals, namely, 41242 + ... + 41257.

2⁶⁵⁹⁹⁹² is an apocalyptic number.

It is an amenable number.

659992 is a deficient number, since it is larger than the sum of its proper divisors (577508).

659992 is a wasteful number, since it uses less digits than its factorization.

659992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82505 (or 82501 counting only the distinct ones).

The product of its digits is 43740, while the sum is 40.

The square root of 659992 is about 812.3989167890. The cubic root of 659992 is about 87.0655251290.

The spelling of 659992 in words is "six hundred fifty-nine thousand, nine hundred ninety-two".