65666363 has 8 divisors (see below), whose sum is σ = 75952128. Its totient is φ = 55606824.

The previous prime is 65666323. The next prime is 65666371. The reversal of 65666363 is 36366656.

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

It is not a de Polignac number, because 65666363 - 2¹⁶ = 65600827 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 65666363.

It is not an unprimeable number, because it can be changed into a prime (65666303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55931 + ... + 57092.

It is an arithmetic number, because the mean of its divisors is an integer number (9494016).

Almost surely, 2^65666363 is an apocalyptic number.

65666363 is a deficient number, since it is larger than the sum of its proper divisors (10285765).

65666363 is a wasteful number, since it uses less digits than its factorization.

65666363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113113.

The product of its digits is 349920, while the sum is 41.

The square root of 65666363 is about 8103.4784506408. The cubic root of 65666363 is about 403.4418881510.

The spelling of 65666363 in words is "sixty-five million, six hundred sixty-six thousand, three hundred sixty-three".