77930593 has 4 divisors (see below), whose sum is σ = 83925268. Its totient is φ = 71935920.

The previous prime is 77930591. The next prime is 77930597. The reversal of 77930593 is 39503977.

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 13417569 + 64513024 = 3663^2 + 8032^2 .

It is a cyclic number.

It is not a de Polignac number, because 77930593 - 2¹ = 77930591 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77930591) 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, 2997318 + ... + 2997343.

It is an arithmetic number, because the mean of its divisors is an integer number (20981317).

Almost surely, 2^77930593 is an apocalyptic number.

It is an amenable number.

77930593 is a deficient number, since it is larger than the sum of its proper divisors (5994675).

77930593 is a wasteful number, since it uses less digits than its factorization.

77930593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5994674.

The product of its (nonzero) digits is 178605, while the sum is 43.

The square root of 77930593 is about 8827.8305942060. The cubic root of 77930593 is about 427.1390987572.

The spelling of 77930593 in words is "seventy-seven million, nine hundred thirty thousand, five hundred ninety-three".