6427408 has 30 divisors (see below), whose sum is σ = 13490394. Its totient is φ = 2965248.

The previous prime is 6427367. The next prime is 6427433. The reversal of 6427408 is 8047246.

It can be written as a sum of positive squares in 3 ways, for example, as 16384 + 6411024 = 128^2 + 2532^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 6427408.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1516 + ... + 3892.

Almost surely, 2^6427408 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 6427408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6745197).

6427408 is an abundant number, since it is smaller than the sum of its proper divisors (7062986).

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

6427408 is a wasteful number, since it uses less digits than its factorization.

6427408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2411 (or 2392 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 6427408 is about 2535.2333225958. The cubic root of 6427408 is about 185.9282106274.

It can be divided in two parts, 64 and 27408, that added together give a palindrome (27472).

The spelling of 6427408 in words is "six million, four hundred twenty-seven thousand, four hundred eight".