6390478 has 8 divisors (see below), whose sum is σ = 9636480. Its totient is φ = 3178320.

The previous prime is 6390463. The next prime is 6390499. The reversal of 6390478 is 8740936.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7983 + ... + 8746.

It is an arithmetic number, because the mean of its divisors is an integer number (1204560).

Almost surely, 2^6390478 is an apocalyptic number.

6390478 is a deficient number, since it is larger than the sum of its proper divisors (3246002).

6390478 is a wasteful number, since it uses less digits than its factorization.

6390478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16922.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 6390478 is about 2527.9394771236. The cubic root of 6390478 is about 185.5714301235.

The spelling of 6390478 in words is "six million, three hundred ninety thousand, four hundred seventy-eight".