652865 has 8 divisors (see below), whose sum is σ = 804840. Its totient is φ = 508032.

The previous prime is 652853. The next prime is 652871. The reversal of 652865 is 568256.

It is a happy number.

652865 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 808²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 61504 + 591361 = 248^2 + 769^2 .

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 652865 - 2⁴ = 652849 is a prime.

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1580 + ... + 1949.

It is an arithmetic number, because the mean of its divisors is an integer number (100605).

2⁶⁵²⁸⁶⁵ is an apocalyptic number.

It is an amenable number.

652865 is a deficient number, since it is larger than the sum of its proper divisors (151975).

652865 is a wasteful number, since it uses less digits than its factorization.

652865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3571.

The product of its digits is 14400, while the sum is 32.

The square root of 652865 is about 808.0006188116. Note that the first 3 decimals coincide. The cubic root of 652865 is about 86.7509945156.

The spelling of 652865 in words is "six hundred fifty-two thousand, eight hundred sixty-five".