652378669 has 2 divisors, whose sum is σ = 652378670. Its totient is φ = 652378668.

The previous prime is 652378651. The next prime is 652378681. The reversal of 652378669 is 966873256.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 652189444 + 189225 = 25538^2 + 435^2 .

It is a cyclic number.

It is not a de Polignac number, because 652378669 - 2¹⁹ = 651854381 is a prime.

It is a super-2 number, since 2×652378669² = 851195855532423122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (652373669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 326189334 + 326189335.

It is an arithmetic number, because the mean of its divisors is an integer number (326189335).

Almost surely, 2^652378669 is an apocalyptic number.

It is an amenable number.

652378669 is a deficient number, since it is larger than the sum of its proper divisors (1).

652378669 is an equidigital number, since it uses as much as digits as its factorization.

652378669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3265920, while the sum is 52.

The square root of 652378669 is about 25541.7045045941. The cubic root of 652378669 is about 867.2944836735.

The spelling of 652378669 in words is "six hundred fifty-two million, three hundred seventy-eight thousand, six hundred sixty-nine".