6402787 has 2 divisors, whose sum is σ = 6402788. Its totient is φ = 6402786.

The previous prime is 6402779. The next prime is 6402817. The reversal of 6402787 is 7872046.

6402787 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6402787 - 2³ = 6402779 is a prime.

It is not a weakly prime, because it can be changed into another prime (6402287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3201393 + 3201394.

It is an arithmetic number, because the mean of its divisors is an integer number (3201394).

Almost surely, 2^6402787 is an apocalyptic number.

6402787 is a deficient number, since it is larger than the sum of its proper divisors (1).

6402787 is an equidigital number, since it uses as much as digits as its factorization.

6402787 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18816, while the sum is 34.

The square root of 6402787 is about 2530.3728974205. The cubic root of 6402787 is about 185.6904996586.

The spelling of 6402787 in words is "six million, four hundred two thousand, seven hundred eighty-seven".