77332393 has 4 divisors (see below), whose sum is σ = 77354500. Its totient is φ = 77310288.

The previous prime is 77332319. The next prime is 77332397. The reversal of 77332393 is 39323377.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 46895104 + 30437289 = 6848^2 + 5517^2 .

It is a cyclic number.

It is not a de Polignac number, because 77332393 - 2¹³ = 77324201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77332397) 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, 4518 + ... + 13231.

It is an arithmetic number, because the mean of its divisors is an integer number (19338625).

Almost surely, 2^77332393 is an apocalyptic number.

It is an amenable number.

77332393 is a deficient number, since it is larger than the sum of its proper divisors (22107).

77332393 is a wasteful number, since it uses less digits than its factorization.

77332393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22106.

The product of its digits is 71442, while the sum is 37.

The square root of 77332393 is about 8793.8838404882. The cubic root of 77332393 is about 426.0433750569.

The spelling of 77332393 in words is "seventy-seven million, three hundred thirty-two thousand, three hundred ninety-three".