77768853 has 8 divisors (see below), whose sum is σ = 103751808. Its totient is φ = 51815904.

The previous prime is 77768849. The next prime is 77768893. The reversal of 77768853 is 35886777.

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

It is not a de Polignac number, because 77768853 - 2² = 77768849 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 77768796 and 77768805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77768893) 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 7 ways as a sum of consecutive naturals, for example, 525 + ... + 12482.

It is an arithmetic number, because the mean of its divisors is an integer number (12968976).

Almost surely, 2^77768853 is an apocalyptic number.

It is an amenable number.

77768853 is a deficient number, since it is larger than the sum of its proper divisors (25982955).

77768853 is a wasteful number, since it uses less digits than its factorization.

77768853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15003.

The product of its digits is 1975680, while the sum is 51.

The square root of 77768853 is about 8818.6650350266. The cubic root of 77768853 is about 426.8433940601.

The spelling of 77768853 in words is "seventy-seven million, seven hundred sixty-eight thousand, eight hundred fifty-three".