73207145 has 8 divisors (see below), whose sum is σ = 95834880. Its totient is φ = 53241520.

The previous prime is 73207139. The next prime is 73207157. The reversal of 73207145 is 54170237.

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

It is not a de Polignac number, because 73207145 - 2⁴ = 73207129 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 665465 + ... + 665574.

It is an arithmetic number, because the mean of its divisors is an integer number (11979360).

Almost surely, 2^73207145 is an apocalyptic number.

It is an amenable number.

73207145 is a deficient number, since it is larger than the sum of its proper divisors (22627735).

73207145 is a wasteful number, since it uses less digits than its factorization.

73207145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1331055.

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 73207145 is about 8556.1174021866. The cubic root of 73207145 is about 418.3288564605.

The spelling of 73207145 in words is "seventy-three million, two hundred seven thousand, one hundred forty-five".