652109 has 4 divisors (see below), whose sum is σ = 661116. Its totient is φ = 643104.

The previous prime is 652087. The next prime is 652117. The reversal of 652109 is 901256.

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 265225 + 386884 = 515^2 + 622^2 .

It is a cyclic number.

It is not a de Polignac number, because 652109 - 2⁸ = 651853 is a prime.

It is a super-2 number, since 2×652109² = 850492295762, which contains 22 as substring.

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 (652189) 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, 4394 + ... + 4539.

It is an arithmetic number, because the mean of its divisors is an integer number (165279).

2⁶⁵²¹⁰⁹ is an apocalyptic number.

It is an amenable number.

652109 is a deficient number, since it is larger than the sum of its proper divisors (9007).

652109 is an equidigital number, since it uses as much as digits as its factorization.

652109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9006.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 652109 is about 807.5326618781. The cubic root of 652109 is about 86.7174964811.

The spelling of 652109 in words is "six hundred fifty-two thousand, one hundred nine".