659954 has 4 divisors (see below), whose sum is σ = 989934. Its totient is φ = 329976.

The previous prime is 659951. The next prime is 659963. The reversal of 659954 is 459956.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 452929 + 207025 = 673^2 + 455^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (659951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164987 + ... + 164990.

2⁶⁵⁹⁹⁵⁴ is an apocalyptic number.

659954 is a deficient number, since it is larger than the sum of its proper divisors (329980).

659954 is a wasteful number, since it uses less digits than its factorization.

659954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329979.

The product of its digits is 48600, while the sum is 38.

The square root of 659954 is about 812.3755289274. The cubic root of 659954 is about 87.0638541221.

The spelling of 659954 in words is "six hundred fifty-nine thousand, nine hundred fifty-four".