73685385 has 24 divisors (see below), whose sum is σ = 128012040. Its totient is φ = 39209472.

The previous prime is 73685383. The next prime is 73685393. The reversal of 73685385 is 58358637.

It can be written as a sum of positive squares in 4 ways, for example, as 32353344 + 41332041 = 5688^2 + 6429^2 .

It is not a de Polignac number, because 73685385 - 2¹ = 73685383 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 73685385.

It is not an unprimeable number, because it can be changed into a prime (73685383) 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 23 ways as a sum of consecutive naturals, for example, 21297 + ... + 24513.

It is an arithmetic number, because the mean of its divisors is an integer number (5333835).

Almost surely, 2^73685385 is an apocalyptic number.

It is an amenable number.

73685385 is a deficient number, since it is larger than the sum of its proper divisors (54326655).

73685385 is a wasteful number, since it uses less digits than its factorization.

73685385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3737 (or 3734 counting only the distinct ones).

The product of its digits is 604800, while the sum is 45.

The square root of 73685385 is about 8584.0191635387. The cubic root of 73685385 is about 419.2378183721.

The spelling of 73685385 in words is "seventy-three million, six hundred eighty-five thousand, three hundred eighty-five".