6780166 has 4 divisors (see below), whose sum is σ = 10170252. Its totient is φ = 3390082.

The previous prime is 6780157. The next prime is 6780217. The reversal of 6780166 is 6610876.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1695040 + ... + 1695043.

It is an arithmetic number, because the mean of its divisors is an integer number (2542563).

Almost surely, 2^6780166 is an apocalyptic number.

6780166 is a deficient number, since it is larger than the sum of its proper divisors (3390086).

6780166 is a wasteful number, since it uses less digits than its factorization.

6780166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3390085.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 6780166 is about 2603.8751890212. The cubic root of 6780166 is about 189.2692708223.

The spelling of 6780166 in words is "six million, seven hundred eighty thousand, one hundred sixty-six".