6787578 has 24 divisors (see below), whose sum is σ = 15792192. Its totient is φ = 1939224.

The previous prime is 6787577. The next prime is 6787589. The reversal of 6787578 is 8757876.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6787577) 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, 11250 + ... + 11837.

It is an arithmetic number, because the mean of its divisors is an integer number (658008).

Almost surely, 2^6787578 is an apocalyptic number.

6787578 is an abundant number, since it is smaller than the sum of its proper divisors (9004614).

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

6787578 is a wasteful number, since it uses less digits than its factorization.

6787578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23106 (or 23099 counting only the distinct ones).

The product of its digits is 658560, while the sum is 48.

The square root of 6787578 is about 2605.2980635620. The cubic root of 6787578 is about 189.3382147070.

It can be divided in two parts, 678 and 7578, that added together give a triangular number (8256 = T₁₂₈).

The spelling of 6787578 in words is "six million, seven hundred eighty-seven thousand, five hundred seventy-eight".