652457609 has 2 divisors, whose sum is σ = 652457610. Its totient is φ = 652457608.

The previous prime is 652457567. The next prime is 652457621. The reversal of 652457609 is 906754256.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 550043209 + 102414400 = 23453^2 + 10120^2 .

It is a cyclic number.

It is not a de Polignac number, because 652457609 - 2¹⁶ = 652392073 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 652457609.

It is not a weakly prime, because it can be changed into another prime (652457699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 326228804 + 326228805.

It is an arithmetic number, because the mean of its divisors is an integer number (326228805).

Almost surely, 2^652457609 is an apocalyptic number.

It is an amenable number.

652457609 is a deficient number, since it is larger than the sum of its proper divisors (1).

652457609 is an equidigital number, since it uses as much as digits as its factorization.

652457609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 453600, while the sum is 44.

The square root of 652457609 is about 25543.2497736682. The cubic root of 652457609 is about 867.3294641066.

The spelling of 652457609 in words is "six hundred fifty-two million, four hundred fifty-seven thousand, six hundred nine".