663627101 has 2 divisors, whose sum is σ = 663627102. Its totient is φ = 663627100.

The previous prime is 663627071. The next prime is 663627163. The reversal of 663627101 is 101726366.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 588111001 + 75516100 = 24251^2 + 8690^2 .

It is a cyclic number.

It is not a de Polignac number, because 663627101 - 2¹⁰ = 663626077 is a prime.

It is a super-3 number, since 3×663627101³ (a number of 27 digits) contains 333 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (663627001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331813550 + 331813551.

It is an arithmetic number, because the mean of its divisors is an integer number (331813551).

Almost surely, 2^663627101 is an apocalyptic number.

It is an amenable number.

663627101 is a deficient number, since it is larger than the sum of its proper divisors (1).

663627101 is an equidigital number, since it uses as much as digits as its factorization.

663627101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 663627101 is about 25760.9607934176. The cubic root of 663627101 is about 872.2507892724.

The spelling of 663627101 in words is "six hundred sixty-three million, six hundred twenty-seven thousand, one hundred one".