652985 has 8 divisors (see below), whose sum is σ = 794760. Its totient is φ = 514944.

The previous prime is 652969. The next prime is 652991. The reversal of 652985 is 589256.

It can be written as a sum of positive squares in 4 ways, for example, as 226576 + 426409 = 476^2 + 653^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 652985 - 2⁴ = 652969 is a prime.

It is a d-powerful number, because it can be written as 6 + 5³ + 9² + 2² + 8⁶ + 5⁸ .

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 652985.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 530 + ... + 1259.

It is an arithmetic number, because the mean of its divisors is an integer number (99345).

2⁶⁵²⁹⁸⁵ is an apocalyptic number.

It is an amenable number.

652985 is a deficient number, since it is larger than the sum of its proper divisors (141775).

652985 is a wasteful number, since it uses less digits than its factorization.

652985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1867.

The product of its digits is 21600, while the sum is 35.

The square root of 652985 is about 808.0748727686. The cubic root of 652985 is about 86.7563092854.

The spelling of 652985 in words is "six hundred fifty-two thousand, nine hundred eighty-five".