65238769 has 2 divisors, whose sum is σ = 65238770. Its totient is φ = 65238768.

The previous prime is 65238737. The next prime is 65238821. The reversal of 65238769 is 96783256.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64000000 + 1238769 = 8000^2 + 1113^2 .

It is a cyclic number.

It is not a de Polignac number, because 65238769 - 2⁵ = 65238737 is a prime.

It is a super-2 number, since 2×65238769² = 8512193961270722, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (65238709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32619384 + 32619385.

It is an arithmetic number, because the mean of its divisors is an integer number (32619385).

Almost surely, 2^65238769 is an apocalyptic number.

It is an amenable number.

65238769 is a deficient number, since it is larger than the sum of its proper divisors (1).

65238769 is an equidigital number, since it uses as much as digits as its factorization.

65238769 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 544320, while the sum is 46.

The square root of 65238769 is about 8077.0519993374. The cubic root of 65238769 is about 402.5642946042.

The spelling of 65238769 in words is "sixty-five million, two hundred thirty-eight thousand, seven hundred sixty-nine".