77229968 has 20 divisors (see below), whose sum is σ = 150503388. Its totient is φ = 38390400.

The previous prime is 77229961. The next prime is 77229973. The reversal of 77229968 is 86992277.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 70090384 + 7139584 = 8372^2 + 2672^2 .

It is not an unprimeable number, because it can be changed into a prime (77229961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11183 + ... + 16718.

Almost surely, 2^77229968 is an apocalyptic number.

It is an amenable number.

77229968 is a deficient number, since it is larger than the sum of its proper divisors (73273420).

77229968 is a wasteful number, since it uses less digits than its factorization.

77229968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28082 (or 28076 counting only the distinct ones).

The product of its digits is 762048, while the sum is 50.

The square root of 77229968 is about 8788.0582610722. The cubic root of 77229968 is about 425.8551970252.

The spelling of 77229968 in words is "seventy-seven million, two hundred twenty-nine thousand, nine hundred sixty-eight".