6977813 has 2 divisors, whose sum is σ = 6977814. Its totient is φ = 6977812.

The previous prime is 6977797. The next prime is 6977827. The reversal of 6977813 is 3187796.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6959044 + 18769 = 2638^2 + 137^2 .

It is a cyclic number.

It is not a de Polignac number, because 6977813 - 2⁴ = 6977797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6977843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3488906 + 3488907.

It is an arithmetic number, because the mean of its divisors is an integer number (3488907).

Almost surely, 2^6977813 is an apocalyptic number.

It is an amenable number.

6977813 is a deficient number, since it is larger than the sum of its proper divisors (1).

6977813 is an equidigital number, since it uses as much as digits as its factorization.

6977813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 63504, while the sum is 41.

The square root of 6977813 is about 2641.5550344447. Note that the first 3 decimals coincide. The cubic root of 6977813 is about 191.0907986369.

The spelling of 6977813 in words is "six million, nine hundred seventy-seven thousand, eight hundred thirteen".