77016208 has 20 divisors (see below), whose sum is σ = 152036028. Its totient is φ = 37781120.

The previous prime is 77016187. The next prime is 77016209. The reversal of 77016208 is 80261077.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 52533504 + 24482704 = 7248^2 + 4948^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 77016208.

It is not an unprimeable number, because it can be changed into a prime (77016209) 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, 44563 + ... + 46258.

Almost surely, 2^77016208 is an apocalyptic number.

It is an amenable number.

77016208 is a deficient number, since it is larger than the sum of its proper divisors (75019820).

77016208 is a wasteful number, since it uses less digits than its factorization.

77016208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90882 (or 90876 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 31.

The square root of 77016208 is about 8775.8878753093. The cubic root of 77016208 is about 425.4619346479.

The spelling of 77016208 in words is "seventy-seven million, sixteen thousand, two hundred eight".