6681764 has 18 divisors (see below), whose sum is σ = 11911410. Its totient is φ = 3279232.

The previous prime is 6681761. The next prime is 6681781. The reversal of 6681764 is 4671866.

It can be written as a sum of positive squares in 3 ways, for example, as 640000 + 6041764 = 800^2 + 2458^2 .

It is not an unprimeable number, because it can be changed into a prime (6681761) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 48704 + ... + 48840.

It is an arithmetic number, because the mean of its divisors is an integer number (661745).

Almost surely, 2^6681764 is an apocalyptic number.

It is an amenable number.

6681764 is a deficient number, since it is larger than the sum of its proper divisors (5229646).

6681764 is a wasteful number, since it uses less digits than its factorization.

6681764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367 (or 228 counting only the distinct ones).

The product of its digits is 48384, while the sum is 38.

The square root of 6681764 is about 2584.9108301835. The cubic root of 6681764 is about 188.3491700121.

The spelling of 6681764 in words is "six million, six hundred eighty-one thousand, seven hundred sixty-four".