77685093 has 12 divisors (see below), whose sum is σ = 113887488. Its totient is φ = 51016680.

The previous prime is 77685079. The next prime is 77685137. The reversal of 77685093 is 39058677.

It is a happy number.

It is not a de Polignac number, because 77685093 - 2⁴ = 77685077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77685193) 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 11 ways as a sum of consecutive naturals, for example, 63813 + ... + 65018.

It is an arithmetic number, because the mean of its divisors is an integer number (9490624).

Almost surely, 2^77685093 is an apocalyptic number.

It is an amenable number.

77685093 is a deficient number, since it is larger than the sum of its proper divisors (36202395).

77685093 is a wasteful number, since it uses less digits than its factorization.

77685093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128904 (or 128901 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 45.

The square root of 77685093 is about 8813.9147375046. The cubic root of 77685093 is about 426.6900968443.

The spelling of 77685093 in words is "seventy-seven million, six hundred eighty-five thousand, ninety-three".