72793783 has 4 divisors (see below), whose sum is σ = 72894640. Its totient is φ = 72692928.

The previous prime is 72793771. The next prime is 72793789. The reversal of 72793783 is 38739727.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72793783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72793789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49338 + ... + 50791.

It is an arithmetic number, because the mean of its divisors is an integer number (18223660).

Almost surely, 2^72793783 is an apocalyptic number.

72793783 is a deficient number, since it is larger than the sum of its proper divisors (100857).

72793783 is a wasteful number, since it uses less digits than its factorization.

72793783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100856.

The product of its digits is 444528, while the sum is 46.

The square root of 72793783 is about 8531.9272734828. The cubic root of 72793783 is about 417.5400093131.

The spelling of 72793783 in words is "seventy-two million, seven hundred ninety-three thousand, seven hundred eighty-three".