77773085 has 8 divisors (see below), whose sum is σ = 100506840. Its totient is φ = 57432384.

The previous prime is 77773081. The next prime is 77773133. The reversal of 77773085 is 58037777.

It can be written as a sum of positive squares in 4 ways, for example, as 702244 + 77070841 = 838^2 + 8779^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 77773085 - 2² = 77773081 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77773081) 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 7 ways as a sum of consecutive naturals, for example, 598190 + ... + 598319.

It is an arithmetic number, because the mean of its divisors is an integer number (12563355).

Almost surely, 2^77773085 is an apocalyptic number.

It is an amenable number.

77773085 is a deficient number, since it is larger than the sum of its proper divisors (22733755).

77773085 is a wasteful number, since it uses less digits than its factorization.

77773085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1196527.

The product of its (nonzero) digits is 288120, while the sum is 44.

The square root of 77773085 is about 8818.9049773767. The cubic root of 77773085 is about 426.8511365278.

The spelling of 77773085 in words is "seventy-seven million, seven hundred seventy-three thousand, eighty-five".