6599778 has 16 divisors (see below), whose sum is σ = 13228320. Its totient is φ = 2195136.

The previous prime is 6599759. The next prime is 6599779. The reversal of 6599778 is 8779956.

It is a self number, because there is not a number n which added to its sum of digits gives 6599778.

It is not an unprimeable number, because it can be changed into a prime (6599779) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2826 + ... + 4602.

It is an arithmetic number, because the mean of its divisors is an integer number (826770).

Almost surely, 2^6599778 is an apocalyptic number.

6599778 is an abundant number, since it is smaller than the sum of its proper divisors (6628542).

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

6599778 is a wasteful number, since it uses less digits than its factorization.

6599778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2401.

The product of its digits is 952560, while the sum is 51.

The square root of 6599778 is about 2569.0033086783. The cubic root of 6599778 is about 187.5756423687.

The spelling of 6599778 in words is "six million, five hundred ninety-nine thousand, seven hundred seventy-eight".