77768416 has 24 divisors (see below), whose sum is σ = 167026104. Its totient is φ = 35349120.

The previous prime is 77768407. The next prime is 77768417. The reversal of 77768416 is 61486777.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77768417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110115 + ... + 110818.

It is an arithmetic number, because the mean of its divisors is an integer number (6959421).

Almost surely, 2^77768416 is an apocalyptic number.

It is an amenable number.

77768416 is an abundant number, since it is smaller than the sum of its proper divisors (89257688).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77768416 is a wasteful number, since it uses less digits than its factorization.

77768416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220954 (or 220946 counting only the distinct ones).

The product of its digits is 395136, while the sum is 46.

The square root of 77768416 is about 8818.6402579990. The cubic root of 77768416 is about 426.8425945502.

The spelling of 77768416 in words is "seventy-seven million, seven hundred sixty-eight thousand, four hundred sixteen".