65049289 has 2 divisors, whose sum is σ = 65049290. Its totient is φ = 65049288.

The previous prime is 65049251. The next prime is 65049301. The reversal of 65049289 is 98294056.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63872064 + 1177225 = 7992^2 + 1085^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65049289 is a prime.

It is not a weakly prime, because it can be changed into another prime (65049209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32524644 + 32524645.

It is an arithmetic number, because the mean of its divisors is an integer number (32524645).

Almost surely, 2^65049289 is an apocalyptic number.

It is an amenable number.

65049289 is a deficient number, since it is larger than the sum of its proper divisors (1).

65049289 is an equidigital number, since it uses as much as digits as its factorization.

65049289 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 43.

The square root of 65049289 is about 8065.3139430527. The cubic root of 65049289 is about 402.1741796952.

The spelling of 65049289 in words is "sixty-five million, forty-nine thousand, two hundred eighty-nine".