7123691 has 2 divisors, whose sum is σ = 7123692. Its totient is φ = 7123690.

The previous prime is 7123679. The next prime is 7123693. The reversal of 7123691 is 1963217.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7123691 - 2¹⁰ = 7122667 is a prime.

Together with 7123693, 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 (7123693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3561845 + 3561846.

It is an arithmetic number, because the mean of its divisors is an integer number (3561846).

Almost surely, 2^7123691 is an apocalyptic number.

7123691 is a deficient number, since it is larger than the sum of its proper divisors (1).

7123691 is an equidigital number, since it uses as much as digits as its factorization.

7123691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2268, while the sum is 29.

The square root of 7123691 is about 2669.0243535794. The cubic root of 7123691 is about 192.4132717767.

The spelling of 7123691 in words is "seven million, one hundred twenty-three thousand, six hundred ninety-one".