6921077 has 2 divisors, whose sum is σ = 6921078. Its totient is φ = 6921076.

The previous prime is 6921043. The next prime is 6921097. The reversal of 6921077 is 7701296.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6522916 + 398161 = 2554^2 + 631^2 .

It is a cyclic number.

It is not a de Polignac number, because 6921077 - 2¹⁴ = 6904693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6921007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3460538 + 3460539.

It is an arithmetic number, because the mean of its divisors is an integer number (3460539).

Almost surely, 2^6921077 is an apocalyptic number.

It is an amenable number.

6921077 is a deficient number, since it is larger than the sum of its proper divisors (1).

6921077 is an equidigital number, since it uses as much as digits as its factorization.

6921077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5292, while the sum is 32.

The square root of 6921077 is about 2630.7939866132. The cubic root of 6921077 is about 190.5714742489.

The spelling of 6921077 in words is "six million, nine hundred twenty-one thousand, seventy-seven".