659970 has 24 divisors (see below), whose sum is σ = 1716156. Its totient is φ = 175968.

The previous prime is 659963. The next prime is 659983. The reversal of 659970 is 79956.

It can be written as a sum of positive squares in 2 ways, for example, as 549081 + 110889 = 741^2 + 333^2 .

It is an unprimeable number.

659970 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3577 + ... + 3756.

2⁶⁵⁹⁹⁷⁰ is an apocalyptic number.

659970 is an abundant number, since it is smaller than the sum of its proper divisors (1056186).

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

659970 is a wasteful number, since it uses less digits than its factorization.

659970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7346 (or 7343 counting only the distinct ones).

The product of its (nonzero) digits is 17010, while the sum is 36.

The square root of 659970 is about 812.3853765301. The cubic root of 659970 is about 87.0645577118.

The spelling of 659970 in words is "six hundred fifty-nine thousand, nine hundred seventy".