6891077 has 2 divisors, whose sum is σ = 6891078. Its totient is φ = 6891076.

The previous prime is 6891061. The next prime is 6891107. The reversal of 6891077 is 7701986.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6832996 + 58081 = 2614^2 + 241^2 .

It is a cyclic number.

It is not a de Polignac number, because 6891077 - 2⁴ = 6891061 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6891077.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6891277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3445538 + 3445539.

It is an arithmetic number, because the mean of its divisors is an integer number (3445539).

Almost surely, 2^6891077 is an apocalyptic number.

It is an amenable number.

6891077 is a deficient number, since it is larger than the sum of its proper divisors (1).

6891077 is an equidigital number, since it uses as much as digits as its factorization.

6891077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21168, while the sum is 38.

The square root of 6891077 is about 2625.0860938263. The cubic root of 6891077 is about 190.2957259966.

The spelling of 6891077 in words is "six million, eight hundred ninety-one thousand, seventy-seven".