73073345 has 8 divisors (see below), whose sum is σ = 87743976. Its totient is φ = 58421376.

The previous prime is 73073339. The next prime is 73073381. The reversal of 73073345 is 54337037.

It can be written as a sum of positive squares in 4 ways, for example, as 602176 + 72471169 = 776^2 + 8513^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 73073345 - 2⁶ = 73073281 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6299 + ... + 13631.

It is an arithmetic number, because the mean of its divisors is an integer number (10967997).

Almost surely, 2^73073345 is an apocalyptic number.

It is an amenable number.

73073345 is a deficient number, since it is larger than the sum of its proper divisors (14670631).

73073345 is a wasteful number, since it uses less digits than its factorization.

73073345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9331.

The product of its (nonzero) digits is 26460, while the sum is 32.

The square root of 73073345 is about 8548.2948592102. The cubic root of 73073345 is about 418.0738424828.

The spelling of 73073345 in words is "seventy-three million, seventy-three thousand, three hundred forty-five".