65306489 has 2 divisors, whose sum is σ = 65306490. Its totient is φ = 65306488.

The previous prime is 65306473. The next prime is 65306543. The reversal of 65306489 is 98460356.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36060025 + 29246464 = 6005^2 + 5408^2 .

It is a cyclic number.

It is not a de Polignac number, because 65306489 - 2⁴ = 65306473 is a prime.

It is equal to p_3857567 and since 65306489 and 3857567 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (65306419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32653244 + 32653245.

It is an arithmetic number, because the mean of its divisors is an integer number (32653245).

Almost surely, 2^65306489 is an apocalyptic number.

It is an amenable number.

65306489 is a deficient number, since it is larger than the sum of its proper divisors (1).

65306489 is an equidigital number, since it uses as much as digits as its factorization.

65306489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 155520, while the sum is 41.

The square root of 65306489 is about 8081.2430355732. The cubic root of 65306489 is about 402.7035381198.

The spelling of 65306489 in words is "sixty-five million, three hundred six thousand, four hundred eighty-nine".