652665589 has 2 divisors, whose sum is σ = 652665590. Its totient is φ = 652665588.

The previous prime is 652665551. The next prime is 652665617. The reversal of 652665589 is 985566256.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 643484689 + 9180900 = 25367^2 + 3030^2 .

It is a cyclic number.

It is not a de Polignac number, because 652665589 - 2²³ = 644276981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (652665539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 326332794 + 326332795.

It is an arithmetic number, because the mean of its divisors is an integer number (326332795).

Almost surely, 2^652665589 is an apocalyptic number.

It is an amenable number.

652665589 is a deficient number, since it is larger than the sum of its proper divisors (1).

652665589 is an equidigital number, since it uses as much as digits as its factorization.

652665589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888000, while the sum is 52.

The square root of 652665589 is about 25547.3205835759. The cubic root of 652665589 is about 867.4216121205.

The spelling of 652665589 in words is "six hundred fifty-two million, six hundred sixty-five thousand, five hundred eighty-nine".