72245566 has 8 divisors (see below), whose sum is σ = 108441720. Its totient is φ = 36098328.

The previous prime is 72245549. The next prime is 72245623. The reversal of 72245566 is 66554227.

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

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 8281 + ... + 14596.

It is an arithmetic number, because the mean of its divisors is an integer number (13555215).

Almost surely, 2^72245566 is an apocalyptic number.

72245566 is a deficient number, since it is larger than the sum of its proper divisors (36196154).

72245566 is a wasteful number, since it uses less digits than its factorization.

72245566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24458.

The product of its digits is 100800, while the sum is 37.

The square root of 72245566 is about 8499.7391724688. The cubic root of 72245566 is about 416.4891889125.

The spelling of 72245566 in words is "seventy-two million, two hundred forty-five thousand, five hundred sixty-six".