366121663 has 2 divisors, whose sum is σ = 366121664. Its totient is φ = 366121662.

The previous prime is 366121661. The next prime is 366121699.

366121663 is nontrivially palindromic in base 10.

It is a weak prime.

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 366121663 - 2¹ = 366121661 is a prime.

Together with 366121661, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (366121661) 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 as a sum of consecutive naturals, namely, 183060831 + 183060832.

It is an arithmetic number, because the mean of its divisors is an integer number (183060832).

Almost surely, 2^366121663 is an apocalyptic number.

366121663 is a deficient number, since it is larger than the sum of its proper divisors (1).

366121663 is an equidigital number, since it uses as much as digits as its factorization.

366121663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 34.

The square root of 366121663 is about 19134.3059189509. The cubic root of 366121663 is about 715.3882599584.

The spelling of 366121663 in words is "three hundred sixty-six million, one hundred twenty-one thousand, six hundred sixty-three".