6385978 has 8 divisors (see below), whose sum is σ = 9837972. Its totient is φ = 3106656.

The previous prime is 6385943. The next prime is 6385987. The reversal of 6385978 is 8795836.

It can be written as a sum of positive squares in 2 ways, for example, as 6365529 + 20449 = 2523^2 + 143^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43075 + ... + 43222.

Almost surely, 2^6385978 is an apocalyptic number.

6385978 is a deficient number, since it is larger than the sum of its proper divisors (3451994).

6385978 is a wasteful number, since it uses less digits than its factorization.

6385978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86336.

The product of its digits is 362880, while the sum is 46.

The square root of 6385978 is about 2527.0492674263. The cubic root of 6385978 is about 185.5278617852.

The spelling of 6385978 in words is "six million, three hundred eighty-five thousand, nine hundred seventy-eight".