65969213 has 2 divisors, whose sum is σ = 65969214. Its totient is φ = 65969212.

The previous prime is 65969207. The next prime is 65969249. The reversal of 65969213 is 31296956.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56957209 + 9012004 = 7547^2 + 3002^2 .

It is a cyclic number.

It is not a de Polignac number, because 65969213 - 2⁶ = 65969149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65969263) 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, 32984606 + 32984607.

It is an arithmetic number, because the mean of its divisors is an integer number (32984607).

Almost surely, 2^65969213 is an apocalyptic number.

It is an amenable number.

65969213 is a deficient number, since it is larger than the sum of its proper divisors (1).

65969213 is an equidigital number, since it uses as much as digits as its factorization.

65969213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 87480, while the sum is 41.

The square root of 65969213 is about 8122.1433747503. The cubic root of 65969213 is about 404.0611550889.

The spelling of 65969213 in words is "sixty-five million, nine hundred sixty-nine thousand, two hundred thirteen".