6968557 has 2 divisors, whose sum is σ = 6968558. Its totient is φ = 6968556.

The previous prime is 6968551. The next prime is 6968561. The reversal of 6968557 is 7558696.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4468996 + 2499561 = 2114^2 + 1581^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6968557 is a prime.

6968557 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6968551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3484278 + 3484279.

It is an arithmetic number, because the mean of its divisors is an integer number (3484279).

Almost surely, 2^6968557 is an apocalyptic number.

It is an amenable number.

6968557 is a deficient number, since it is larger than the sum of its proper divisors (1).

6968557 is an equidigital number, since it uses as much as digits as its factorization.

6968557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 453600, while the sum is 46.

The square root of 6968557 is about 2639.8024547303. The cubic root of 6968557 is about 191.0062678973.

The spelling of 6968557 in words is "six million, nine hundred sixty-eight thousand, five hundred fifty-seven".