6406877 has 2 divisors, whose sum is σ = 6406878. Its totient is φ = 6406876.

The previous prime is 6406867. The next prime is 6406879. The reversal of 6406877 is 7786046.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4301476 + 2105401 = 2074^2 + 1451^2 .

It is a cyclic number.

It is not a de Polignac number, because 6406877 - 2⁴ = 6406861 is a prime.

Together with 6406879, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 6406877.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6406879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3203438 + 3203439.

It is an arithmetic number, because the mean of its divisors is an integer number (3203439).

Almost surely, 2^6406877 is an apocalyptic number.

It is an amenable number.

6406877 is a deficient number, since it is larger than the sum of its proper divisors (1).

6406877 is an equidigital number, since it uses as much as digits as its factorization.

6406877 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56448, while the sum is 38.

The square root of 6406877 is about 2531.1809496755. The cubic root of 6406877 is about 185.7300299698.

The spelling of 6406877 in words is "six million, four hundred six thousand, eight hundred seventy-seven".