6681020228 has 6 divisors (see below), whose sum is σ = 11691785406. Its totient is φ = 3340510112.

The previous prime is 6681020221. The next prime is 6681020239. The reversal of 6681020228 is 8220201866.

It can be written as a sum of positive squares in only one way, i.e., 5662261504 + 1018758724 = 75248^2 + 31918^2 .

It is not an unprimeable number, because it can be changed into a prime (6681020221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 835127525 + ... + 835127532.

It is an arithmetic number, because the mean of its divisors is an integer number (1948630901).

Almost surely, 2^6681020228 is an apocalyptic number.

It is an amenable number.

6681020228 is a deficient number, since it is larger than the sum of its proper divisors (5010765178).

6681020228 is a wasteful number, since it uses less digits than its factorization.

6681020228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1670255061 (or 1670255059 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 6681020228 is about 81737.5080853337. The cubic root of 6681020228 is about 1883.4218113722.

The spelling of 6681020228 in words is "six billion, six hundred eighty-one million, twenty thousand, two hundred twenty-eight".