6403877 has 2 divisors, whose sum is σ = 6403878. Its totient is φ = 6403876.

The previous prime is 6403853. The next prime is 6403889. The reversal of 6403877 is 7783046.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4468996 + 1934881 = 2114^2 + 1391^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6403877 is a prime.

It is a super-2 number, since 2×6403877² = 82019281262258, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6403847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3201938 + 3201939.

It is an arithmetic number, because the mean of its divisors is an integer number (3201939).

Almost surely, 2^6403877 is an apocalyptic number.

It is an amenable number.

6403877 is a deficient number, since it is larger than the sum of its proper divisors (1).

6403877 is an equidigital number, since it uses as much as digits as its factorization.

6403877 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 6403877 is about 2530.5882715290. The cubic root of 6403877 is about 185.7010362765.

The spelling of 6403877 in words is "six million, four hundred three thousand, eight hundred seventy-seven".