652309 has 4 divisors (see below), whose sum is σ = 745504. Its totient is φ = 559116.

The previous prime is 652291. The next prime is 652319. The reversal of 652309 is 903256.

652309 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 652309 - 2¹¹ = 650261 is a prime.

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (652319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46587 + ... + 46600.

It is an arithmetic number, because the mean of its divisors is an integer number (186376).

2⁶⁵²³⁰⁹ is an apocalyptic number.

It is an amenable number.

652309 is a deficient number, since it is larger than the sum of its proper divisors (93195).

652309 is an equidigital number, since it uses as much as digits as its factorization.

652309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93194.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 652309 is about 807.6564863851. The cubic root of 652309 is about 86.7263609125.

It can be divided in two parts, 652 and 309, that added together give a square (961 = 31²).

The spelling of 652309 in words is "six hundred fifty-two thousand, three hundred nine".