73305745 has 16 divisors (see below), whose sum is σ = 90456912. Its totient is φ = 56995840.

The previous prime is 73305737. The next prime is 73305763. The reversal of 73305745 is 54750337.

It can be written as a sum of positive squares in 8 ways, for example, as 35569296 + 37736449 = 5964^2 + 6143^2 .

It is not a de Polignac number, because 73305745 - 2³ = 73305737 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 73305745.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 71859 + ... + 72871.

It is an arithmetic number, because the mean of its divisors is an integer number (5653557).

Almost surely, 2^73305745 is an apocalyptic number.

It is an amenable number.

73305745 is a deficient number, since it is larger than the sum of its proper divisors (17151167).

73305745 is a wasteful number, since it uses less digits than its factorization.

73305745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1412.

The product of its (nonzero) digits is 44100, while the sum is 34.

The square root of 73305745 is about 8561.8774226217. The cubic root of 73305745 is about 418.5165827677.

The spelling of 73305745 in words is "seventy-three million, three hundred five thousand, seven hundred forty-five".