6478836 has 96 divisors (see below), whose sum is σ = 19756800. Its totient is φ = 1603584.

The previous prime is 6478831. The next prime is 6478841. The reversal of 6478836 is 6388746.

It is an interprime number because it is at equal distance from previous prime (6478831) and next prime (6478841).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6478831) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18390 + ... + 18738.

It is an arithmetic number, because the mean of its divisors is an integer number (205800).

Almost surely, 2^6478836 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 6478836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9878400).

6478836 is an abundant number, since it is smaller than the sum of its proper divisors (13277964).

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

6478836 is a wasteful number, since it uses less digits than its factorization.

6478836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393 (or 391 counting only the distinct ones).

The product of its digits is 193536, while the sum is 42.

The square root of 6478836 is about 2545.3557708108. The cubic root of 6478836 is about 186.4227866683.

The spelling of 6478836 in words is "six million, four hundred seventy-eight thousand, eight hundred thirty-six".