77385373 has 4 divisors (see below), whose sum is σ = 83338108. Its totient is φ = 71432640.

The previous prime is 77385367. The next prime is 77385401. The reversal of 77385373 is 37358377.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37358377 = 7 ⋅5336911.

It can be written as a sum of positive squares in 2 ways, for example, as 39967684 + 37417689 = 6322^2 + 6117^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77385373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77385323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2976348 + ... + 2976373.

It is an arithmetic number, because the mean of its divisors is an integer number (20834527).

Almost surely, 2^77385373 is an apocalyptic number.

It is an amenable number.

77385373 is a deficient number, since it is larger than the sum of its proper divisors (5952735).

77385373 is a wasteful number, since it uses less digits than its factorization.

77385373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5952734.

The product of its digits is 370440, while the sum is 43.

The square root of 77385373 is about 8796.8956456241. The cubic root of 77385373 is about 426.1406461766.

The spelling of 77385373 in words is "seventy-seven million, three hundred eighty-five thousand, three hundred seventy-three".