74318777 has 4 divisors (see below), whose sum is σ = 80035620. Its totient is φ = 68601936.

The previous prime is 74318743. The next prime is 74318779. The reversal of 74318777 is 77781347.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 77781347 = 7 ⋅11111621.

It can be written as a sum of positive squares in 2 ways, for example, as 33051001 + 41267776 = 5749^2 + 6424^2 .

It is not a de Polignac number, because 74318777 - 2⁸ = 74318521 is a prime.

It is a super-2 number, since 2×74318777² = 11046561229551458, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74318779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2858402 + ... + 2858427.

It is an arithmetic number, because the mean of its divisors is an integer number (20008905).

Almost surely, 2^74318777 is an apocalyptic number.

It is an amenable number.

74318777 is a deficient number, since it is larger than the sum of its proper divisors (5716843).

74318777 is a wasteful number, since it uses less digits than its factorization.

74318777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5716842.

The product of its digits is 230496, while the sum is 44.

The square root of 74318777 is about 8620.8338923796. The cubic root of 74318777 is about 420.4356345384.

The spelling of 74318777 in words is "seventy-four million, three hundred eighteen thousand, seven hundred seventy-seven".