65936369 has 8 divisors (see below), whose sum is σ = 66444840. Its totient is φ = 65430400.

The previous prime is 65936359. The next prime is 65936383. The reversal of 65936369 is 96363956.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 18601969 + 47334400 = 4313^2 + 6880^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 65936369 - 2²⁴ = 49159153 is a prime.

It is a super-2 number, since 2×65936369² = 8695209513808322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (65936359) 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 in 7 ways as a sum of consecutive naturals, for example, 129287 + ... + 129795.

It is an arithmetic number, because the mean of its divisors is an integer number (8305605).

It is the magic constant of a 509 × 509 magic square.

Almost surely, 2^65936369 is an apocalyptic number.

It is an amenable number.

65936369 is a deficient number, since it is larger than the sum of its proper divisors (508471).

65936369 is a wasteful number, since it uses less digits than its factorization.

65936369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1251.

The product of its digits is 787320, while the sum is 47.

The square root of 65936369 is about 8120.1212429372. The cubic root of 65936369 is about 403.9940875029.

The spelling of 65936369 in words is "sixty-five million, nine hundred thirty-six thousand, three hundred sixty-nine".