6478992 has 60 divisors (see below), whose sum is σ = 19532604. Its totient is φ = 1992960.

The previous prime is 6478991. The next prime is 6478999. The reversal of 6478992 is 2998746.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1115136 + 5363856 = 1056^2 + 2316^2 .

It is not an unprimeable number, because it can be changed into a prime (6478991) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 142 + ... + 3602.

Almost surely, 2^6478992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6478992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9766302).

6478992 is an abundant number, since it is smaller than the sum of its proper divisors (13053612).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6478992 is a wasteful number, since it uses less digits than its factorization.

6478992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3488 (or 3479 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 6478992 is about 2545.3864146726. The cubic root of 6478992 is about 186.4242829104.

The spelling of 6478992 in words is "six million, four hundred seventy-eight thousand, nine hundred ninety-two".