77129068 has 24 divisors (see below), whose sum is σ = 145962432. Its totient is φ = 35522304.

The previous prime is 77129033. The next prime is 77129069. The reversal of 77129068 is 86092177.

It is a self number, because there is not a number n which added to its sum of digits gives 77129068.

It is not an unprimeable number, because it can be changed into a prime (77129069) 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 7 ways as a sum of consecutive naturals, for example, 8871 + ... + 15262.

It is an arithmetic number, because the mean of its divisors is an integer number (6081768).

Almost surely, 2^77129068 is an apocalyptic number.

It is an amenable number.

77129068 is a deficient number, since it is larger than the sum of its proper divisors (68833364).

77129068 is a wasteful number, since it uses less digits than its factorization.

77129068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24201 (or 24199 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 40.

The square root of 77129068 is about 8782.3156399665. The cubic root of 77129068 is about 425.6696580140.

The spelling of 77129068 in words is "seventy-seven million, one hundred twenty-nine thousand, sixty-eight".