8028766664 has 16 divisors (see below), whose sum is σ = 15939463500. Its totient is φ = 3778243072.

The previous prime is 8028766661. The next prime is 8028766703. The reversal of 8028766664 is 4666678208.

It can be written as a sum of positive squares in 2 ways, for example, as 7247116900 + 781649764 = 85130^2 + 27958^2 .

It is a super-2 number, since 2×8028766664² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8028766661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29517389 + ... + 29517660.

Almost surely, 2^8028766664 is an apocalyptic number.

It is an amenable number.

8028766664 is a deficient number, since it is larger than the sum of its proper divisors (7910696836).

8028766664 is a wasteful number, since it uses less digits than its factorization.

8028766664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59035072 (or 59035068 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 53.

The square root of 8028766664 is about 89603.3853378320. The cubic root of 8028766664 is about 2002.3943543896.

The spelling of 8028766664 in words is "eight billion, twenty-eight million, seven hundred sixty-six thousand, six hundred sixty-four".