72108773 has 4 divisors (see below), whose sum is σ = 78664128. Its totient is φ = 65553420.

The previous prime is 72108739. The next prime is 72108793. The reversal of 72108773 is 37780127.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72108773 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 (72108793) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3277661 + ... + 3277682.

It is an arithmetic number, because the mean of its divisors is an integer number (19666032).

Almost surely, 2^72108773 is an apocalyptic number.

It is an amenable number.

72108773 is a deficient number, since it is larger than the sum of its proper divisors (6555355).

72108773 is a wasteful number, since it uses less digits than its factorization.

72108773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6555354.

The product of its (nonzero) digits is 16464, while the sum is 35.

The square root of 72108773 is about 8491.6884657882. The cubic root of 72108773 is about 416.2261563836.

The spelling of 72108773 in words is "seventy-two million, one hundred eight thousand, seven hundred seventy-three".