6678788 has 6 divisors (see below), whose sum is σ = 11687886. Its totient is φ = 3339392.

The previous prime is 6678779. The next prime is 6678797. The reversal of 6678788 is 8878766.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (6678779) and next prime (6678797).

It can be written as a sum of positive squares in only one way, i.e., 6543364 + 135424 = 2558^2 + 368^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 834845 + ... + 834852.

It is an arithmetic number, because the mean of its divisors is an integer number (1947981).

Almost surely, 2^6678788 is an apocalyptic number.

It is an amenable number.

6678788 is a deficient number, since it is larger than the sum of its proper divisors (5009098).

6678788 is a wasteful number, since it uses less digits than its factorization.

6678788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1669701 (or 1669699 counting only the distinct ones).

The product of its digits is 903168, while the sum is 50.

The square root of 6678788 is about 2584.3351175883. The cubic root of 6678788 is about 188.3212028281.

The spelling of 6678788 in words is "six million, six hundred seventy-eight thousand, seven hundred eighty-eight".