64202689 has 2 divisors, whose sum is σ = 64202690. Its totient is φ = 64202688.

The previous prime is 64202647. The next prime is 64202711. The reversal of 64202689 is 98620246.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63872064 + 330625 = 7992^2 + 575^2 .

It is a cyclic number.

It is not a de Polignac number, because 64202689 - 2¹¹ = 64200641 is a prime.

It is not a weakly prime, because it can be changed into another prime (64202609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32101344 + 32101345.

It is an arithmetic number, because the mean of its divisors is an integer number (32101345).

Almost surely, 2^64202689 is an apocalyptic number.

It is an amenable number.

64202689 is a deficient number, since it is larger than the sum of its proper divisors (1).

64202689 is an equidigital number, since it uses as much as digits as its factorization.

64202689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 64202689 is about 8012.6580483632. The cubic root of 64202689 is about 400.4218237554.

The spelling of 64202689 in words is "sixty-four million, two hundred two thousand, six hundred eighty-nine".