77378368 has 28 divisors (see below), whose sum is σ = 154236420. Its totient is φ = 38515712.

The previous prime is 77378347. The next prime is 77378369. The reversal of 77378368 is 86387377.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 38340864 + 39037504 = 6192^2 + 6248^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77378369) 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, 12318 + ... + 17506.

Almost surely, 2^77378368 is an apocalyptic number.

It is an amenable number.

77378368 is a deficient number, since it is larger than the sum of its proper divisors (76858052).

77378368 is a wasteful number, since it uses less digits than its factorization.

77378368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5434 (or 5424 counting only the distinct ones).

The product of its digits is 1185408, while the sum is 49.

The square root of 77378368 is about 8796.4974847947. The cubic root of 77378368 is about 426.1277875653.

Subtracting 77378368 from its reverse (86387377), we obtain a palindrome (9009009).

The spelling of 77378368 in words is "seventy-seven million, three hundred seventy-eight thousand, three hundred sixty-eight".