242636663 has 2 divisors, whose sum is σ = 242636664. Its totient is φ = 242636662.

The previous prime is 242636657. The next prime is 242636671. The reversal of 242636663 is 366636242.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 242636663 - 2⁶ = 242636599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242636623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121318331 + 121318332.

It is an arithmetic number, because the mean of its divisors is an integer number (121318332).

Almost surely, 2^242636663 is an apocalyptic number.

242636663 is a deficient number, since it is larger than the sum of its proper divisors (1).

242636663 is an equidigital number, since it uses as much as digits as its factorization.

242636663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 186624, while the sum is 38.

The square root of 242636663 is about 15576.7988688305. The cubic root of 242636663 is about 623.7139747307.

The spelling of 242636663 in words is "two hundred forty-two million, six hundred thirty-six thousand, six hundred sixty-three".