73716813 has 12 divisors (see below), whose sum is σ = 106555228. Its totient is φ = 49109760.

The previous prime is 73716767. The next prime is 73716829. The reversal of 73716813 is 31861737.

It can be written as a sum of positive squares in 2 ways, for example, as 63393444 + 10323369 = 7962^2 + 3213^2 .

It is not a de Polignac number, because 73716813 - 2⁸ = 73716557 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 (73716833) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20253 + ... + 23613.

Almost surely, 2^73716813 is an apocalyptic number.

It is an amenable number.

73716813 is a deficient number, since it is larger than the sum of its proper divisors (32838415).

73716813 is a wasteful number, since it uses less digits than its factorization.

73716813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5804 (or 5801 counting only the distinct ones).

The product of its digits is 21168, while the sum is 36.

The square root of 73716813 is about 8585.8495793952. The cubic root of 73716813 is about 419.2974137874.

It can be divided in two parts, 73716 and 813, that added together give a square (74529 = 273²).

The spelling of 73716813 in words is "seventy-three million, seven hundred sixteen thousand, eight hundred thirteen".