77723080 has 16 divisors (see below), whose sum is σ = 174877020. Its totient is φ = 31089216.

The previous prime is 77723047. The next prime is 77723081. The reversal of 77723080 is 8032777.

It can be written as a sum of positive squares in 2 ways, for example, as 75585636 + 2137444 = 8694^2 + 1462^2 .

It is not an unprimeable number, because it can be changed into a prime (77723081) 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, 971499 + ... + 971578.

Almost surely, 2^77723080 is an apocalyptic number.

It is an amenable number.

77723080 is an abundant number, since it is smaller than the sum of its proper divisors (97153940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77723080 is a wasteful number, since it uses less digits than its factorization.

77723080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1943088 (or 1943084 counting only the distinct ones).

The product of its (nonzero) digits is 16464, while the sum is 34.

The square root of 77723080 is about 8816.0694189644. The cubic root of 77723080 is about 426.7596341470.

The spelling of 77723080 in words is "seventy-seven million, seven hundred twenty-three thousand, eighty".