73085777 has 4 divisors (see below), whose sum is σ = 73534320. Its totient is φ = 72637236.

The previous prime is 73085759. The next prime is 73085791. The reversal of 73085777 is 77758037.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 77758037 = 7 ⋅11108291.

It is a cyclic number.

It is not a de Polignac number, because 73085777 - 2¹⁴ = 73069393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73085377) 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, 224027 + ... + 224352.

It is an arithmetic number, because the mean of its divisors is an integer number (18383580).

Almost surely, 2^73085777 is an apocalyptic number.

It is an amenable number.

73085777 is a deficient number, since it is larger than the sum of its proper divisors (448543).

73085777 is a wasteful number, since it uses less digits than its factorization.

73085777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448542.

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

The square root of 73085777 is about 8549.0219908478. The cubic root of 73085777 is about 418.0975501667.

The spelling of 73085777 in words is "seventy-three million, eighty-five thousand, seven hundred seventy-seven".