77768307 has 12 divisors (see below), whose sum is σ = 114009480. Its totient is φ = 51071328.

The previous prime is 77768297. The next prime is 77768357. The reversal of 77768307 is 70386777.

It is not a de Polignac number, because 77768307 - 2⁴ = 77768291 is a prime.

It is not an unprimeable number, because it can be changed into a prime (77768357) 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 11 ways as a sum of consecutive naturals, for example, 63882 + ... + 65087.

It is an arithmetic number, because the mean of its divisors is an integer number (9500790).

Almost surely, 2^77768307 is an apocalyptic number.

77768307 is a deficient number, since it is larger than the sum of its proper divisors (36241173).

77768307 is a wasteful number, since it uses less digits than its factorization.

77768307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129042 (or 129039 counting only the distinct ones).

The product of its (nonzero) digits is 345744, while the sum is 45.

The square root of 77768307 is about 8818.6340779057. The cubic root of 77768307 is about 426.8423951296.

The spelling of 77768307 in words is "seventy-seven million, seven hundred sixty-eight thousand, three hundred seven".