6478642 has 8 divisors (see below), whose sum is σ = 9733932. Its totient is φ = 3234000.

The previous prime is 6478631. The next prime is 6478673. The reversal of 6478642 is 2468746.

It can be written as a sum of positive squares in 2 ways, for example, as 6355441 + 123201 = 2521^2 + 351^2 .

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

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, 909 + ... + 3712.

Almost surely, 2^6478642 is an apocalyptic number.

6478642 is a deficient number, since it is larger than the sum of its proper divisors (3255290).

6478642 is a wasteful number, since it uses less digits than its factorization.

6478642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5324.

The product of its digits is 64512, while the sum is 37.

The square root of 6478642 is about 2545.3176619039. The cubic root of 6478642 is about 186.4209259235.

The spelling of 6478642 in words is "six million, four hundred seventy-eight thousand, six hundred forty-two".