666136363 has 2 divisors, whose sum is σ = 666136364. Its totient is φ = 666136362.

The previous prime is 666136301. The next prime is 666136403. The reversal of 666136363 is 363631666.

It is a happy number.

It is an a-pointer prime, because the next prime (666136403) can be obtained adding 666136363 to its sum of digits (40).

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-666136363 is a prime.

It is a super-2 number, since 2×666136363² = 887475308221735538, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (666137363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333068181 + 333068182.

It is an arithmetic number, because the mean of its divisors is an integer number (333068182).

Almost surely, 2^666136363 is an apocalyptic number.

666136363 is a deficient number, since it is larger than the sum of its proper divisors (1).

666136363 is an equidigital number, since it uses as much as digits as its factorization.

666136363 is an evil number, because the sum of its binary digits is even.

The product of its digits is 209952, while the sum is 40.

The square root of 666136363 is about 25809.6176453662. The cubic root of 666136363 is about 873.3487718298.

The spelling of 666136363 in words is "six hundred sixty-six million, one hundred thirty-six thousand, three hundred sixty-three".