6478858 has 4 divisors (see below), whose sum is σ = 9718290. Its totient is φ = 3239428.

The previous prime is 6478841. The next prime is 6478883. The reversal of 6478858 is 8588746.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8588746 = 2 ⋅4294373.

It can be written as a sum of positive squares in only one way, i.e., 4297329 + 2181529 = 2073^2 + 1477^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1619713 + ... + 1619716.

Almost surely, 2^6478858 is an apocalyptic number.

6478858 is a deficient number, since it is larger than the sum of its proper divisors (3239432).

6478858 is a wasteful number, since it uses less digits than its factorization.

6478858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3239431.

The product of its digits is 430080, while the sum is 46.

The square root of 6478858 is about 2545.3600924034. The cubic root of 6478858 is about 186.4229976782.

It can be divided in two parts, 64788 and 58, that added together give a palindrome (64846).

The spelling of 6478858 in words is "six million, four hundred seventy-eight thousand, eight hundred fifty-eight".