77683 has 4 divisors (see below), whose sum is σ = 78408. Its totient is φ = 76960.

The previous prime is 77681. The next prime is 77687. The reversal of 77683 is 38677.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 77683 - 2¹ = 77681 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77681) 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, 166 + ... + 427.

It is an arithmetic number, because the mean of its divisors is an integer number (19602).

2⁷⁷⁶⁸³ is an apocalyptic number.

77683 is a deficient number, since it is larger than the sum of its proper divisors (725).

77683 is a wasteful number, since it uses less digits than its factorization.

77683 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 724.

The product of its digits is 7056, while the sum is 31.

The square root of 77683 is about 278.7167020471. The cubic root of 77683 is about 42.6686264833.

The spelling of 77683 in words is "seventy-seven thousand, six hundred eighty-three".