7198691 has 2 divisors, whose sum is σ = 7198692. Its totient is φ = 7198690.

The previous prime is 7198669. The next prime is 7198693. The reversal of 7198691 is 1968917.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7198691 - 2²² = 3004387 is a prime.

It is a super-3 number, since 3×7198691³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

Together with 7198693, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (7198693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3599345 + 3599346.

It is an arithmetic number, because the mean of its divisors is an integer number (3599346).

Almost surely, 2^7198691 is an apocalyptic number.

7198691 is a deficient number, since it is larger than the sum of its proper divisors (1).

7198691 is an equidigital number, since it uses as much as digits as its factorization.

7198691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216, while the sum is 41.

The square root of 7198691 is about 2683.0376441638. The cubic root of 7198691 is about 193.0861741230.

The spelling of 7198691 in words is "seven million, one hundred ninety-eight thousand, six hundred ninety-one".