77738311 has 4 divisors (see below), whose sum is σ = 88843792. Its totient is φ = 66632832.

The previous prime is 77738303. The next prime is 77738317. The reversal of 77738311 is 11383777.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11383777 = 43 ⋅264739.

It is not a de Polignac number, because 77738311 - 2³ = 77738303 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 (77738317) 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 3 ways as a sum of consecutive naturals, for example, 5552730 + ... + 5552743.

It is an arithmetic number, because the mean of its divisors is an integer number (22210948).

Almost surely, 2^77738311 is an apocalyptic number.

77738311 is a deficient number, since it is larger than the sum of its proper divisors (11105481).

77738311 is a wasteful number, since it uses less digits than its factorization.

77738311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11105480.

The product of its digits is 24696, while the sum is 37.

The square root of 77738311 is about 8816.9331969795. The cubic root of 77738311 is about 426.7875089706.

The spelling of 77738311 in words is "seventy-seven million, seven hundred thirty-eight thousand, three hundred eleven".