77382823 has 4 divisors (see below), whose sum is σ = 88437520. Its totient is φ = 66328128.

The previous prime is 77382779. The next prime is 77382841. The reversal of 77382823 is 32828377.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 77382823 - 2²¹ = 75285671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77382863) 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 3 ways as a sum of consecutive naturals, for example, 5527338 + ... + 5527351.

It is an arithmetic number, because the mean of its divisors is an integer number (22109380).

Almost surely, 2^77382823 is an apocalyptic number.

77382823 is a deficient number, since it is larger than the sum of its proper divisors (11054697).

77382823 is a wasteful number, since it uses less digits than its factorization.

77382823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11054696.

The product of its digits is 112896, while the sum is 40.

The square root of 77382823 is about 8796.7507069372. The cubic root of 77382823 is about 426.1359654015.

The spelling of 77382823 in words is "seventy-seven million, three hundred eighty-two thousand, eight hundred twenty-three".