100687091 has 2 divisors, whose sum is σ = 100687092. Its totient is φ = 100687090.

The previous prime is 100687087. The next prime is 100687117. The reversal of 100687091 is 190786001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 100687091 - 2² = 100687087 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (100687591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50343545 + 50343546.

It is an arithmetic number, because the mean of its divisors is an integer number (50343546).

Almost surely, 2^100687091 is an apocalyptic number.

100687091 is a deficient number, since it is larger than the sum of its proper divisors (1).

100687091 is an equidigital number, since it uses as much as digits as its factorization.

100687091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 32.

The square root of 100687091 is about 10034.2957401105. The cubic root of 100687091 is about 465.2195225100.

The spelling of 100687091 in words is "one hundred million, six hundred eighty-seven thousand, ninety-one".