100665679 has 2 divisors, whose sum is σ = 100665680. Its totient is φ = 100665678.

The previous prime is 100665659. The next prime is 100665683. The reversal of 100665679 is 976566001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 100665679 - 2⁹ = 100665167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100665659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50332839 + 50332840.

It is an arithmetic number, because the mean of its divisors is an integer number (50332840).

Almost surely, 2^100665679 is an apocalyptic number.

100665679 is a deficient number, since it is larger than the sum of its proper divisors (1).

100665679 is an equidigital number, since it uses as much as digits as its factorization.

100665679 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 68040, while the sum is 40.

The square root of 100665679 is about 10033.2287425335. The cubic root of 100665679 is about 465.1865424907.

The spelling of 100665679 in words is "one hundred million, six hundred sixty-five thousand, six hundred seventy-nine".