652609 has 2 divisors, whose sum is σ = 652610. Its totient is φ = 652608.

The previous prime is 652607. The next prime is 652621. The reversal of 652609 is 906256.

652609 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 600625 + 51984 = 775^2 + 228^2 .

It is a cyclic number.

It is not a de Polignac number, because 652609 - 2¹ = 652607 is a prime.

Together with 652607, it forms a pair of twin primes.

652609 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (652601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 326304 + 326305.

It is an arithmetic number, because the mean of its divisors is an integer number (326305).

2⁶⁵²⁶⁰⁹ is an apocalyptic number.

It is an amenable number.

652609 is a deficient number, since it is larger than the sum of its proper divisors (1).

652609 is an equidigital number, since it uses as much as digits as its factorization.

652609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 652609 is about 807.8421875589. The cubic root of 652609 is about 86.7396541629.

The spelling of 652609 in words is "six hundred fifty-two thousand, six hundred nine".