73086745 has 4 divisors (see below), whose sum is σ = 87704100. Its totient is φ = 58469392.

The previous prime is 73086721. The next prime is 73086751. The reversal of 73086745 is 54768037.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 41062464 + 32024281 = 6408^2 + 5659^2 .

It is a cyclic number.

It is not a de Polignac number, because 73086745 - 2¹³ = 73078553 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 73086698 and 73086707.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7308670 + ... + 7308679.

It is an arithmetic number, because the mean of its divisors is an integer number (21926025).

Almost surely, 2^73086745 is an apocalyptic number.

It is an amenable number.

73086745 is a deficient number, since it is larger than the sum of its proper divisors (14617355).

73086745 is a wasteful number, since it uses less digits than its factorization.

73086745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14617354.

The product of its (nonzero) digits is 141120, while the sum is 40.

The square root of 73086745 is about 8549.0786053235. The cubic root of 73086745 is about 418.0993960189.

The spelling of 73086745 in words is "seventy-three million, eighty-six thousand, seven hundred forty-five".