73033645 has 4 divisors (see below), whose sum is σ = 87640380. Its totient is φ = 58426912.

The previous prime is 73033643. The next prime is 73033657. The reversal of 73033645 is 54633037.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54633037 = 19 ⋅2875423.

It can be written as a sum of positive squares in 2 ways, for example, as 9847044 + 63186601 = 3138^2 + 7949^2 .

It is a cyclic number.

It is not a de Polignac number, because 73033645 - 2¹ = 73033643 is a prime.

It is a super-3 number, since 3×73033645³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73033643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7303360 + ... + 7303369.

It is an arithmetic number, because the mean of its divisors is an integer number (21910095).

Almost surely, 2^73033645 is an apocalyptic number.

It is an amenable number.

73033645 is a deficient number, since it is larger than the sum of its proper divisors (14606735).

73033645 is a wasteful number, since it uses less digits than its factorization.

73033645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14606734.

The product of its (nonzero) digits is 22680, while the sum is 31.

The square root of 73033645 is about 8545.9724432039. The cubic root of 73033645 is about 417.9981170218.

The spelling of 73033645 in words is "seventy-three million, thirty-three thousand, six hundred forty-five".