77004813 has 16 divisors (see below), whose sum is σ = 105437376. Its totient is φ = 49969920.

The previous prime is 77004803. The next prime is 77004817. The reversal of 77004813 is 31840077.

It is a happy number.

It is not a de Polignac number, because 77004813 - 2¹² = 77000717 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77004817) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18981 + ... + 22677.

It is an arithmetic number, because the mean of its divisors is an integer number (6589836).

Almost surely, 2^77004813 is an apocalyptic number.

It is an amenable number.

77004813 is a deficient number, since it is larger than the sum of its proper divisors (28432563).

77004813 is a wasteful number, since it uses less digits than its factorization.

77004813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3884.

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 77004813 is about 8775.2386292340. The cubic root of 77004813 is about 425.4409504161.

The spelling of 77004813 in words is "seventy-seven million, four thousand, eight hundred thirteen".