65801969 has 2 divisors, whose sum is σ = 65801970. Its totient is φ = 65801968.

The previous prime is 65801963. The next prime is 65802001. The reversal of 65801969 is 96910856.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52200625 + 13601344 = 7225^2 + 3688^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65801969 is a prime.

It is a super-2 number, since 2×65801969² = 8659798248553922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (65801963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32900984 + 32900985.

It is an arithmetic number, because the mean of its divisors is an integer number (32900985).

Almost surely, 2^65801969 is an apocalyptic number.

It is an amenable number.

65801969 is a deficient number, since it is larger than the sum of its proper divisors (1).

65801969 is an equidigital number, since it uses as much as digits as its factorization.

65801969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 116640, while the sum is 44.

The square root of 65801969 is about 8111.8412829641. The cubic root of 65801969 is about 403.7194098625.

The spelling of 65801969 in words is "sixty-five million, eight hundred one thousand, nine hundred sixty-nine".