100663601 has 2 divisors, whose sum is σ = 100663602. Its totient is φ = 100663600.

The previous prime is 100663583. The next prime is 100663609. The reversal of 100663601 is 106366001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77862976 + 22800625 = 8824^2 + 4775^2 .

It is a cyclic number.

It is not a de Polignac number, because 100663601 - 2²² = 96469297 is a prime.

It is not a weakly prime, because it can be changed into another prime (100663609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50331800 + 50331801.

It is an arithmetic number, because the mean of its divisors is an integer number (50331801).

Almost surely, 2^100663601 is an apocalyptic number.

It is an amenable number.

100663601 is a deficient number, since it is larger than the sum of its proper divisors (1).

100663601 is an equidigital number, since it uses as much as digits as its factorization.

100663601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 100663601 is about 10033.1251861023. The cubic root of 100663601 is about 465.1833415842.

The spelling of 100663601 in words is "one hundred million, six hundred sixty-three thousand, six hundred one".