72005066 has 16 divisors (see below), whose sum is σ = 123560640. Its totient is φ = 30828480.

The previous prime is 72005051. The next prime is 72005099. The reversal of 72005066 is 66050027.

It is a Curzon number.

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, 17165 + ... + 20943.

It is an arithmetic number, because the mean of its divisors is an integer number (7722540).

Almost surely, 2^72005066 is an apocalyptic number.

72005066 is a deficient number, since it is larger than the sum of its proper divisors (51555574).

72005066 is a wasteful number, since it uses less digits than its factorization.

72005066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5149.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 72005066 is about 8485.5798859006. The cubic root of 72005066 is about 416.0265215155.

The spelling of 72005066 in words is "seventy-two million, five thousand, sixty-six".