66696363 has 12 divisors (see below), whose sum is σ = 97919328. Its totient is φ = 43734960.

The previous prime is 66696359. The next prime is 66696367. The reversal of 66696363 is 36369666.

It is an interprime number because it is at equal distance from previous prime (66696359) and next prime (66696367).

It is not a de Polignac number, because 66696363 - 2² = 66696359 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66696367) 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 11 ways as a sum of consecutive naturals, for example, 60195 + ... + 61292.

It is an arithmetic number, because the mean of its divisors is an integer number (8159944).

Almost surely, 2^66696363 is an apocalyptic number.

66696363 is a deficient number, since it is larger than the sum of its proper divisors (31222965).

66696363 is a wasteful number, since it uses less digits than its factorization.

66696363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121554 (or 121551 counting only the distinct ones).

The product of its digits is 629856, while the sum is 45.

The square root of 66696363 is about 8166.7841284070. The cubic root of 66696363 is about 405.5403304669.

The spelling of 66696363 in words is "sixty-six million, six hundred ninety-six thousand, three hundred sixty-three".