100681673 has 4 divisors (see below), whose sum is σ = 102060948. Its totient is φ = 99302400.

The previous prime is 100681643. The next prime is 100681681. The reversal of 100681673 is 376186001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 376186001 = 89 ⋅4226809.

It can be written as a sum of positive squares in 2 ways, for example, as 41822089 + 58859584 = 6467^2 + 7672^2 .

It is a cyclic number.

It is not a de Polignac number, because 100681673 - 2¹⁶ = 100616137 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (100681613) 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, 689528 + ... + 689673.

It is an arithmetic number, because the mean of its divisors is an integer number (25515237).

Almost surely, 2^100681673 is an apocalyptic number.

It is an amenable number.

100681673 is a deficient number, since it is larger than the sum of its proper divisors (1379275).

100681673 is an equidigital number, since it uses as much as digits as its factorization.

100681673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1379274.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 100681673 is about 10034.0257623747. The cubic root of 100681673 is about 465.2111778303.

The spelling of 100681673 in words is "one hundred million, six hundred eighty-one thousand, six hundred seventy-three".