72326566 has 16 divisors (see below), whose sum is σ = 118818000. Its totient is φ = 32815008.

The previous prime is 72326563. The next prime is 72326581. The reversal of 72326566 is 66562327.

It is a super-2 number, since 2×72326566² = 10462264298704712, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72326563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22041 + ... + 25108.

It is an arithmetic number, because the mean of its divisors is an integer number (7426125).

Almost surely, 2^72326566 is an apocalyptic number.

72326566 is a deficient number, since it is larger than the sum of its proper divisors (46491434).

72326566 is a wasteful number, since it uses less digits than its factorization.

72326566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47223.

The product of its digits is 90720, while the sum is 37.

The square root of 72326566 is about 8504.5026897521. The cubic root of 72326566 is about 416.6447833485.

The spelling of 72326566 in words is "seventy-two million, three hundred twenty-six thousand, five hundred sixty-six".