72766726 has 8 divisors (see below), whose sum is σ = 109668024. Its totient is φ = 36210720.

The previous prime is 72766711. The next prime is 72766747. The reversal of 72766726 is 62766727.

It is a happy number.

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 (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85795 + ... + 86638.

It is an arithmetic number, because the mean of its divisors is an integer number (13708503).

Almost surely, 2^72766726 is an apocalyptic number.

72766726 is a deficient number, since it is larger than the sum of its proper divisors (36901298).

72766726 is a wasteful number, since it uses less digits than its factorization.

72766726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172646.

The product of its digits is 296352, while the sum is 43.

The square root of 72766726 is about 8530.3414937504. The cubic root of 72766726 is about 417.4882705539.

Subtracting from 72766726 its reverse (62766727), we obtain a palindrome (9999999).

The spelling of 72766726 in words is "seventy-two million, seven hundred sixty-six thousand, seven hundred twenty-six".