6402905477 has 2 divisors, whose sum is σ = 6402905478. Its totient is φ = 6402905476.

The previous prime is 6402905459. The next prime is 6402905479. The reversal of 6402905477 is 7745092046.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6379855876 + 23049601 = 79874^2 + 4801^2 .

It is a cyclic number.

It is not a de Polignac number, because 6402905477 - 2⁶ = 6402905413 is a prime.

Together with 6402905479, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6402905479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3201452738 + 3201452739.

It is an arithmetic number, because the mean of its divisors is an integer number (3201452739).

Almost surely, 2^6402905477 is an apocalyptic number.

It is an amenable number.

6402905477 is a deficient number, since it is larger than the sum of its proper divisors (1).

6402905477 is an equidigital number, since it uses as much as digits as its factorization.

6402905477 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 423360, while the sum is 44.

The square root of 6402905477 is about 80018.1571707322. The cubic root of 6402905477 is about 1856.9164498892.

The spelling of 6402905477 in words is "six billion, four hundred two million, nine hundred five thousand, four hundred seventy-seven".