97080691 has 2 divisors, whose sum is σ = 97080692. Its totient is φ = 97080690.

The previous prime is 97080689. The next prime is 97080721. The reversal of 97080691 is 19608079.

It is a weak prime.

It is an emirp because it is prime and its reverse (19608079) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 97080691 - 2¹ = 97080689 is a prime.

Together with 97080689, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (97080611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48540345 + 48540346.

It is an arithmetic number, because the mean of its divisors is an integer number (48540346).

Almost surely, 2^97080691 is an apocalyptic number.

97080691 is a deficient number, since it is larger than the sum of its proper divisors (1).

97080691 is an equidigital number, since it uses as much as digits as its factorization.

97080691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 40.

The square root of 97080691 is about 9852.9534150934. The cubic root of 97080691 is about 459.5974597541.

The spelling of 97080691 in words is "ninety-seven million, eighty thousand, six hundred ninety-one".