66536363 has 4 divisors (see below), whose sum is σ = 66568320. Its totient is φ = 66504408.

The previous prime is 66536329. The next prime is 66536383. The reversal of 66536363 is 36363566.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36363566 = 2 ⋅18181783.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66536363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66536383) 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 3 ways as a sum of consecutive naturals, for example, 12620 + ... + 17097.

It is an arithmetic number, because the mean of its divisors is an integer number (16642080).

Almost surely, 2^66536363 is an apocalyptic number.

66536363 is a deficient number, since it is larger than the sum of its proper divisors (31957).

66536363 is a wasteful number, since it uses less digits than its factorization.

66536363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31956.

The product of its digits is 174960, while the sum is 38.

The square root of 66536363 is about 8156.9824690262. The cubic root of 66536363 is about 405.2157829940.

The spelling of 66536363 in words is "sixty-six million, five hundred thirty-six thousand, three hundred sixty-three".