6478898 has 4 divisors (see below), whose sum is σ = 9718350. Its totient is φ = 3239448.

The previous prime is 6478891. The next prime is 6478931. The reversal of 6478898 is 8988746.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 3713329 + 2765569 = 1927^2 + 1663^2 .

It is a super-2 number, since 2×6478898² = 83952238588808, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6478891) by changing a digit.

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 as a sum of consecutive naturals, namely, 1619723 + ... + 1619726.

Almost surely, 2^6478898 is an apocalyptic number.

6478898 is a deficient number, since it is larger than the sum of its proper divisors (3239452).

6478898 is a wasteful number, since it uses less digits than its factorization.

6478898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3239451.

The product of its digits is 774144, while the sum is 50.

The square root of 6478898 is about 2545.3679498257. The cubic root of 6478898 is about 186.4233813315.

The spelling of 6478898 in words is "six million, four hundred seventy-eight thousand, eight hundred ninety-eight".