771506668 has 12 divisors (see below), whose sum is σ = 1363245520. Its totient is φ = 382007952.

The previous prime is 771506627. The next prime is 771506683. The reversal of 771506668 is 866605177.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 935883 + ... + 936706.

Almost surely, 2^771506668 is an apocalyptic number.

It is an amenable number.

771506668 is a deficient number, since it is larger than the sum of its proper divisors (591738852).

771506668 is a wasteful number, since it uses less digits than its factorization.

771506668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1872696 (or 1872694 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 46.

The square root of 771506668 is about 27776.0088565654. The cubic root of 771506668 is about 917.1630741742.

The spelling of 771506668 in words is "seven hundred seventy-one million, five hundred six thousand, six hundred sixty-eight".