6478899 has 8 divisors (see below), whose sum is σ = 9872640. Its totient is φ = 3702216.

The previous prime is 6478891. The next prime is 6478931. The reversal of 6478899 is 9988746.

It is a happy number.

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

It is not a de Polignac number, because 6478899 - 2³ = 6478891 is a prime.

It is a super-2 number, since 2×6478899² = 83952264504402, which contains 22 as substring.

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

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154239 + ... + 154280.

It is an arithmetic number, because the mean of its divisors is an integer number (1234080).

Almost surely, 2^6478899 is an apocalyptic number.

6478899 is a deficient number, since it is larger than the sum of its proper divisors (3393741).

6478899 is a wasteful number, since it uses less digits than its factorization.

6478899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308529.

The product of its digits is 870912, while the sum is 51.

The square root of 6478899 is about 2545.3681462610. The cubic root of 6478899 is about 186.4233909228.

The spelling of 6478899 in words is "six million, four hundred seventy-eight thousand, eight hundred ninety-nine".