77945873 has 8 divisors (see below), whose sum is σ = 83959296. Its totient is φ = 72151200.

The previous prime is 77945863. The next prime is 77945891. The reversal of 77945873 is 37854977.

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

It is a cyclic number.

It is not a de Polignac number, because 77945873 - 2¹⁰ = 77944849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77945843) 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, 53948 + ... + 55373.

It is an arithmetic number, because the mean of its divisors is an integer number (10494912).

Almost surely, 2^77945873 is an apocalyptic number.

It is an amenable number.

77945873 is a deficient number, since it is larger than the sum of its proper divisors (6013423).

77945873 is a wasteful number, since it uses less digits than its factorization.

77945873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109375.

The product of its digits is 1481760, while the sum is 50.

The square root of 77945873 is about 8828.6959965784. The cubic root of 77945873 is about 427.1670135921.

The spelling of 77945873 in words is "seventy-seven million, nine hundred forty-five thousand, eight hundred seventy-three".