6497878 has 4 divisors (see below), whose sum is σ = 9746820. Its totient is φ = 3248938.

The previous prime is 6497873. The next prime is 6497899. The reversal of 6497878 is 8787946.

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 (6497873) 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, 1624468 + ... + 1624471.

It is an arithmetic number, because the mean of its divisors is an integer number (2436705).

Almost surely, 2^6497878 is an apocalyptic number.

6497878 is a deficient number, since it is larger than the sum of its proper divisors (3248942).

6497878 is a wasteful number, since it uses less digits than its factorization.

6497878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3248941.

The product of its digits is 677376, while the sum is 49.

The square root of 6497878 is about 2549.0935643872. The cubic root of 6497878 is about 186.6052469415.

It can be divided in two parts, 64978 and 78, that added together give a palindrome (65056).

The spelling of 6497878 in words is "six million, four hundred ninety-seven thousand, eight hundred seventy-eight".