100668049 has 4 divisors (see below), whose sum is σ = 100845540. Its totient is φ = 100490560.

The previous prime is 100667993. The next prime is 100668059. The reversal of 100668049 is 940866001.

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

It can be written as a sum of positive squares in 2 ways, for example, as 32490000 + 68178049 = 5700^2 + 8257^2 .

It is a cyclic number.

It is not a de Polignac number, because 100668049 - 2²³ = 92279441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100668059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87892 + ... + 89029.

It is an arithmetic number, because the mean of its divisors is an integer number (25211385).

Almost surely, 2^100668049 is an apocalyptic number.

It is an amenable number.

100668049 is a deficient number, since it is larger than the sum of its proper divisors (177491).

100668049 is an equidigital number, since it uses as much as digits as its factorization.

100668049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177490.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 100668049 is about 10033.3468493818. The cubic root of 100668049 is about 465.1901931340.

The spelling of 100668049 in words is "one hundred million, six hundred sixty-eight thousand, forty-nine".