6478090 has 8 divisors (see below), whose sum is σ = 11660580. Its totient is φ = 2591232.

The previous prime is 6478061. The next prime is 6478103. The reversal of 6478090 is 908746.

It can be written as a sum of positive squares in 2 ways, for example, as 6416089 + 62001 = 2533^2 + 249^2 .

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, 323895 + ... + 323914.

Almost surely, 2^6478090 is an apocalyptic number.

6478090 is a deficient number, since it is larger than the sum of its proper divisors (5182490).

6478090 is a wasteful number, since it uses less digits than its factorization.

6478090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647816.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 6478090 is about 2545.2092251915. The cubic root of 6478090 is about 186.4156312298.

It can be divided in two parts, 647 and 8090, that multiplied together give a triangular number (5234230 = T₃₂₃₅).

The spelling of 6478090 in words is "six million, four hundred seventy-eight thousand, ninety".