67691101 has 2 divisors, whose sum is σ = 67691102. Its totient is φ = 67691100.

The previous prime is 67691087. The next prime is 67691111. The reversal of 67691101 is 10119676.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67667076 + 24025 = 8226^2 + 155^2 .

It is a cyclic number.

It is not a de Polignac number, because 67691101 - 2⁵ = 67691069 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67691111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33845550 + 33845551.

It is an arithmetic number, because the mean of its divisors is an integer number (33845551).

Almost surely, 2^67691101 is an apocalyptic number.

It is an amenable number.

67691101 is a deficient number, since it is larger than the sum of its proper divisors (1).

67691101 is an equidigital number, since it uses as much as digits as its factorization.

67691101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 31.

The square root of 67691101 is about 8227.4601791804. The cubic root of 67691101 is about 407.5465233496.

The spelling of 67691101 in words is "sixty-seven million, six hundred ninety-one thousand, one hundred one".