72756766 has 8 divisors (see below), whose sum is σ = 112898520. Its totient is φ = 35123928.

The previous prime is 72756743. The next prime is 72756773. The reversal of 72756766 is 66765727.

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, 627156 + ... + 627271.

It is an arithmetic number, because the mean of its divisors is an integer number (14112315).

Almost surely, 2^72756766 is an apocalyptic number.

72756766 is a deficient number, since it is larger than the sum of its proper divisors (40141754).

72756766 is a wasteful number, since it uses less digits than its factorization.

72756766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1254458.

The product of its digits is 740880, while the sum is 46.

The square root of 72756766 is about 8529.7576753387. The cubic root of 72756766 is about 417.4692216784.

It can be divided in two parts, 7275 and 6766, that added together give a palindrome (14041).

The spelling of 72756766 in words is "seventy-two million, seven hundred fifty-six thousand, seven hundred sixty-six".