6426878 has 4 divisors (see below), whose sum is σ = 9640320. Its totient is φ = 3213438.

The previous prime is 6426877. The next prime is 6426881. The reversal of 6426878 is 8786246.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6426877) 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, 1606718 + ... + 1606721.

It is an arithmetic number, because the mean of its divisors is an integer number (2410080).

Almost surely, 2^6426878 is an apocalyptic number.

6426878 is a deficient number, since it is larger than the sum of its proper divisors (3213442).

6426878 is a wasteful number, since it uses less digits than its factorization.

6426878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3213441.

The product of its digits is 129024, while the sum is 41.

The square root of 6426878 is about 2535.1287935724. The cubic root of 6426878 is about 185.9230999794.

It can be divided in two parts, 64268 and 78, that added together give a palindrome (64346).

The spelling of 6426878 in words is "six million, four hundred twenty-six thousand, eight hundred seventy-eight".