7118861 has 2 divisors, whose sum is σ = 7118862. Its totient is φ = 7118860.

The previous prime is 7118857. The next prime is 7118879. The reversal of 7118861 is 1688117.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5175625 + 1943236 = 2275^2 + 1394^2 .

It is a cyclic number.

It is not a de Polignac number, because 7118861 - 2² = 7118857 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7118161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3559430 + 3559431.

It is an arithmetic number, because the mean of its divisors is an integer number (3559431).

Almost surely, 2^7118861 is an apocalyptic number.

It is an amenable number.

7118861 is a deficient number, since it is larger than the sum of its proper divisors (1).

7118861 is an equidigital number, since it uses as much as digits as its factorization.

7118861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2688, while the sum is 32.

The square root of 7118861 is about 2668.1193751405. The cubic root of 7118861 is about 192.3697753073.

The spelling of 7118861 in words is "seven million, one hundred eighteen thousand, eight hundred sixty-one".