77948683 has 2 divisors, whose sum is σ = 77948684. Its totient is φ = 77948682.

The previous prime is 77948681. The next prime is 77948687. The reversal of 77948683 is 38684977.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (38684977) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 77948683 - 2¹ = 77948681 is a prime.

Together with 77948681, it forms a pair of twin primes.

It is a plaindrome in base 11.

It is a self number, because there is not a number n which added to its sum of digits gives 77948683.

It is not a weakly prime, because it can be changed into another prime (77948681) 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 as a sum of consecutive naturals, namely, 38974341 + 38974342.

It is an arithmetic number, because the mean of its divisors is an integer number (38974342).

Almost surely, 2^77948683 is an apocalyptic number.

77948683 is a deficient number, since it is larger than the sum of its proper divisors (1).

77948683 is an equidigital number, since it uses as much as digits as its factorization.

77948683 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2032128, while the sum is 52.

The square root of 77948683 is about 8828.8551352936. The cubic root of 77948683 is about 427.1721467477.

The spelling of 77948683 in words is "seventy-seven million, nine hundred forty-eight thousand, six hundred eighty-three".