64489 has 2 divisors, whose sum is σ = 64490. Its totient is φ = 64488.

The previous prime is 64483. The next prime is 64499. The reversal of 64489 is 98446.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57600 + 6889 = 240^2 + 83^2 .

It is a cyclic number.

It is not a de Polignac number, because 64489 - 2⁹ = 63977 is a prime.

It is a super-2 number, since 2×64489² = 8317662242, which contains 22 as substring.

It is a plaindrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 64489.

It is not a weakly prime, because it can be changed into another prime (64483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32244 + 32245.

It is an arithmetic number, because the mean of its divisors is an integer number (32245).

2⁶⁴⁴⁸⁹ is an apocalyptic number.

It is an amenable number.

64489 is a deficient number, since it is larger than the sum of its proper divisors (1).

64489 is an equidigital number, since it uses as much as digits as its factorization.

64489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 31.

The square root of 64489 is about 253.9468448317. The cubic root of 64489 is about 40.1016166329.

The spelling of 64489 in words is "sixty-four thousand, four hundred eighty-nine".