366989663 has 2 divisors, whose sum is σ = 366989664. Its totient is φ = 366989662.

The previous prime is 366989657. The next prime is 366989671.

366989663 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 366989663 - 2⁸ = 366989407 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 366989599 and 366989608.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (366983663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 183494831 + 183494832.

It is an arithmetic number, because the mean of its divisors is an integer number (183494832).

Almost surely, 2^366989663 is an apocalyptic number.

366989663 is a deficient number, since it is larger than the sum of its proper divisors (1).

366989663 is an equidigital number, since it uses as much as digits as its factorization.

366989663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7558272, while the sum is 56.

The square root of 366989663 is about 19156.9742652643. The cubic root of 366989663 is about 715.9531604608.

The spelling of 366989663 in words is "three hundred sixty-six million, nine hundred eighty-nine thousand, six hundred sixty-three".