659740 has 12 divisors (see below), whose sum is σ = 1385496. Its totient is φ = 263888.

The previous prime is 659723. The next prime is 659741. The reversal of 659740 is 47956.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (659741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16474 + ... + 16513.

It is an arithmetic number, because the mean of its divisors is an integer number (115458).

2⁶⁵⁹⁷⁴⁰ is an apocalyptic number.

It is an amenable number.

659740 is an abundant number, since it is smaller than the sum of its proper divisors (725756).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

659740 is a wasteful number, since it uses less digits than its factorization.

659740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32996 (or 32994 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 659740 is about 812.2438057628. The cubic root of 659740 is about 87.0544425172.

The spelling of 659740 in words is "six hundred fifty-nine thousand, seven hundred forty".