77318 has 8 divisors (see below), whose sum is σ = 117912. Its totient is φ = 38016.

The previous prime is 77317. The next prime is 77323. The reversal of 77318 is 81377.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155 + ... + 422.

It is an arithmetic number, because the mean of its divisors is an integer number (14739).

2⁷⁷³¹⁸ is an apocalyptic number.

77318 is a deficient number, since it is larger than the sum of its proper divisors (40594).

77318 is a wasteful number, since it uses less digits than its factorization.

77318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646.

The product of its digits is 1176, while the sum is 26.

The square root of 77318 is about 278.0611443550. The cubic root of 77318 is about 42.6016941879.

The spelling of 77318 in words is "seventy-seven thousand, three hundred eighteen".