652409 has 4 divisors (see below), whose sum is σ = 690804. Its totient is φ = 614016.

The previous prime is 652381. The next prime is 652411. The reversal of 652409 is 904256.

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

It can be written as a sum of positive squares in 2 ways, for example, as 183184 + 469225 = 428^2 + 685^2 .

It is a cyclic number.

It is not a de Polignac number, because 652409 - 2⁸ = 652153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (652429) 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, 19172 + ... + 19205.

It is an arithmetic number, because the mean of its divisors is an integer number (172701).

2⁶⁵²⁴⁰⁹ is an apocalyptic number.

It is an amenable number.

652409 is a deficient number, since it is larger than the sum of its proper divisors (38395).

652409 is a wasteful number, since it uses less digits than its factorization.

652409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38394.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 652409 is about 807.7183915202. The cubic root of 652409 is about 86.7307924488.

The spelling of 652409 in words is "six hundred fifty-two thousand, four hundred nine".