65697133 has 2 divisors, whose sum is σ = 65697134. Its totient is φ = 65697132.

The previous prime is 65697127. The next prime is 65697161. The reversal of 65697133 is 33179656.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35259844 + 30437289 = 5938^2 + 5517^2 .

It is a cyclic number.

It is not a de Polignac number, because 65697133 - 2⁵ = 65697101 is a prime.

It is a super-2 number, since 2×65697133² = 8632226568839378, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65697173) 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, 32848566 + 32848567.

It is an arithmetic number, because the mean of its divisors is an integer number (32848567).

Almost surely, 2^65697133 is an apocalyptic number.

It is an amenable number.

65697133 is a deficient number, since it is larger than the sum of its proper divisors (1).

65697133 is an equidigital number, since it uses as much as digits as its factorization.

65697133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 102060, while the sum is 40.

The square root of 65697133 is about 8105.3767956832. The cubic root of 65697133 is about 403.5048933583.

The spelling of 65697133 in words is "sixty-five million, six hundred ninety-seven thousand, one hundred thirty-three".