73784705 has 4 divisors (see below), whose sum is σ = 88541652. Its totient is φ = 59027760.

The previous prime is 73784701. The next prime is 73784741. The reversal of 73784705 is 50748737.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50748737 = 13 ⋅3903749.

It can be written as a sum of positive squares in 2 ways, for example, as 47169424 + 26615281 = 6868^2 + 5159^2 .

It is not a de Polignac number, because 73784705 - 2² = 73784701 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73784701) 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, 7378466 + ... + 7378475.

It is an arithmetic number, because the mean of its divisors is an integer number (22135413).

Almost surely, 2^73784705 is an apocalyptic number.

It is an amenable number.

73784705 is a deficient number, since it is larger than the sum of its proper divisors (14756947).

73784705 is a wasteful number, since it uses less digits than its factorization.

73784705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14756946.

The product of its (nonzero) digits is 164640, while the sum is 41.

The square root of 73784705 is about 8589.8023842228. The cubic root of 73784705 is about 419.4260963504.

The spelling of 73784705 in words is "seventy-three million, seven hundred eighty-four thousand, seven hundred five".