771630868 has 6 divisors (see below), whose sum is σ = 1350354026. Its totient is φ = 385815432.

The previous prime is 771630863. The next prime is 771630883. The reversal of 771630868 is 868036177.

It can be written as a sum of positive squares in only one way, i.e., 734518404 + 37112464 = 27102^2 + 6092^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (771630863) by changing a digit.

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 as a sum of consecutive naturals, namely, 96453855 + ... + 96453862.

Almost surely, 2^771630868 is an apocalyptic number.

It is an amenable number.

771630868 is a deficient number, since it is larger than the sum of its proper divisors (578723158).

771630868 is a wasteful number, since it uses less digits than its factorization.

771630868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192907721 (or 192907719 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 46.

The square root of 771630868 is about 27778.2445089678. The cubic root of 771630868 is about 917.2122876360.

The spelling of 771630868 in words is "seven hundred seventy-one million, six hundred thirty thousand, eight hundred sixty-eight".