68760091 has 2 divisors, whose sum is σ = 68760092. Its totient is φ = 68760090.

The previous prime is 68760089. The next prime is 68760101. The reversal of 68760091 is 19006786.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68760091 - 2¹ = 68760089 is a prime.

It is a super-2 number, since 2×68760091² = 9455900228656562, which contains 22 as substring.

Together with 68760089, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 68760091.

It is not a weakly prime, because it can be changed into another prime (68760001) 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, 34380045 + 34380046.

It is an arithmetic number, because the mean of its divisors is an integer number (34380046).

Almost surely, 2^68760091 is an apocalyptic number.

68760091 is a deficient number, since it is larger than the sum of its proper divisors (1).

68760091 is an equidigital number, since it uses as much as digits as its factorization.

68760091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 68760091 is about 8292.1704637568. The cubic root of 68760091 is about 409.6806774008.

The spelling of 68760091 in words is "sixty-eight million, seven hundred sixty thousand, ninety-one".