100661063 has 4 divisors (see below), whose sum is σ = 106582320. Its totient is φ = 94739808.

The previous prime is 100661051. The next prime is 100661081. The reversal of 100661063 is 360166001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 100661063 - 2¹⁰ = 100660039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100661003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2960603 + ... + 2960636.

It is an arithmetic number, because the mean of its divisors is an integer number (26645580).

Almost surely, 2^100661063 is an apocalyptic number.

100661063 is a deficient number, since it is larger than the sum of its proper divisors (5921257).

100661063 is an equidigital number, since it uses as much as digits as its factorization.

100661063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5921256.

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

The square root of 100661063 is about 10032.9987042758. The cubic root of 100661063 is about 465.1794320438.

The spelling of 100661063 in words is "one hundred million, six hundred sixty-one thousand, sixty-three".