72067173 has 4 divisors (see below), whose sum is σ = 96089568. Its totient is φ = 48044780.

The previous prime is 72067153. The next prime is 72067181. The reversal of 72067173 is 37176027.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 72067173 - 2¹⁰ = 72066149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72067103) 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, 12011193 + ... + 12011198.

It is an arithmetic number, because the mean of its divisors is an integer number (24022392).

Almost surely, 2^72067173 is an apocalyptic number.

It is an amenable number.

72067173 is a deficient number, since it is larger than the sum of its proper divisors (24022395).

72067173 is a wasteful number, since it uses less digits than its factorization.

72067173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24022394.

The product of its (nonzero) digits is 12348, while the sum is 33.

The square root of 72067173 is about 8489.2386584428. The cubic root of 72067173 is about 416.1460998330.

The spelling of 72067173 in words is "seventy-two million, sixty-seven thousand, one hundred seventy-three".