7668091 has 2 divisors, whose sum is σ = 7668092. Its totient is φ = 7668090.

The previous prime is 7668079. The next prime is 7668113. The reversal of 7668091 is 1908667.

It is a weak prime.

It is an emirp because it is prime and its reverse (1908667) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7668091 is a prime.

7668091 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 7668091.

It is not a weakly prime, because it can be changed into another prime (7668391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3834045 + 3834046.

It is an arithmetic number, because the mean of its divisors is an integer number (3834046).

Almost surely, 2^7668091 is an apocalyptic number.

7668091 is a deficient number, since it is larger than the sum of its proper divisors (1).

7668091 is an equidigital number, since it uses as much as digits as its factorization.

7668091 is an evil number, because the sum of its binary digits is even.

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

The square root of 7668091 is about 2769.1318134029. The cubic root of 7668091 is about 197.1949336075.

The spelling of 7668091 in words is "seven million, six hundred sixty-eight thousand, ninety-one".