6891030088 has 8 divisors (see below), whose sum is σ = 12920681430. Its totient is φ = 3445515040.

The previous prime is 6891030049. The next prime is 6891030089. The reversal of 6891030088 is 8800301986.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 6763746564 + 127283524 = 82242^2 + 11282^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (6891030089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 430689373 + ... + 430689388.

Almost surely, 2^6891030088 is an apocalyptic number.

It is an amenable number.

6891030088 is a deficient number, since it is larger than the sum of its proper divisors (6029651342).

6891030088 is a wasteful number, since it uses less digits than its factorization.

6891030088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 861378767 (or 861378763 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 43.

The square root of 6891030088 is about 83012.2285449560. The cubic root of 6891030088 is about 1902.9529417378.

The spelling of 6891030088 in words is "six billion, eight hundred ninety-one million, thirty thousand, eighty-eight".