100671993 has 6 divisors (see below), whose sum is σ = 145415114. Its totient is φ = 67114656.

The previous prime is 100671971. The next prime is 100671997. The reversal of 100671993 is 399176001.

It can be written as a sum of positive squares in only one way, i.e., 98247744 + 2424249 = 9912^2 + 1557^2 .

It is not a de Polignac number, because 100671993 - 2⁸ = 100671737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100671997) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5592880 + ... + 5592897.

Almost surely, 2^100671993 is an apocalyptic number.

It is an amenable number.

100671993 is a deficient number, since it is larger than the sum of its proper divisors (44743121).

100671993 is a wasteful number, since it uses less digits than its factorization.

100671993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11185783 (or 11185780 counting only the distinct ones).

The product of its (nonzero) digits is 10206, while the sum is 36.

The square root of 100671993 is about 10033.5433920425. The cubic root of 100671993 is about 465.1962681703.

The spelling of 100671993 in words is "one hundred million, six hundred seventy-one thousand, nine hundred ninety-three".