101666603 has 2 divisors, whose sum is σ = 101666604. Its totient is φ = 101666602.

The previous prime is 101666563. The next prime is 101666623. The reversal of 101666603 is 306666101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 101666603 - 2¹⁰ = 101665579 is a prime.

It is not a weakly prime, because it can be changed into another prime (101666623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50833301 + 50833302.

It is an arithmetic number, because the mean of its divisors is an integer number (50833302).

Almost surely, 2^101666603 is an apocalyptic number.

101666603 is a deficient number, since it is larger than the sum of its proper divisors (1).

101666603 is an equidigital number, since it uses as much as digits as its factorization.

101666603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 101666603 is about 10082.9858177030. The cubic root of 101666603 is about 466.7232516987.

The spelling of 101666603 in words is "one hundred one million, six hundred sixty-six thousand, six hundred three".