72586866 has 32 divisors (see below), whose sum is σ = 158817600. Its totient is φ = 21934080.

The previous prime is 72586861. The next prime is 72586867. The reversal of 72586866 is 66868527.

It is not an unprimeable number, because it can be changed into a prime (72586861) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 25650 + ... + 28338.

It is an arithmetic number, because the mean of its divisors is an integer number (4963050).

Almost surely, 2^72586866 is an apocalyptic number.

72586866 is an abundant number, since it is smaller than the sum of its proper divisors (86230734).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72586866 is a wasteful number, since it uses less digits than its factorization.

72586866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3114.

The product of its digits is 967680, while the sum is 48.

The square root of 72586866 is about 8519.7926031095. The cubic root of 72586866 is about 417.1440134251.

The spelling of 72586866 in words is "seventy-two million, five hundred eighty-six thousand, eight hundred sixty-six".