73809713 has 2 divisors, whose sum is σ = 73809714. Its totient is φ = 73809712.

The previous prime is 73809647. The next prime is 73809719. The reversal of 73809713 is 31790837.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40551424 + 33258289 = 6368^2 + 5767^2 .

It is a cyclic number.

It is not a de Polignac number, because 73809713 - 2²⁰ = 72761137 is a prime.

It is not a weakly prime, because it can be changed into another prime (73809719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36904856 + 36904857.

It is an arithmetic number, because the mean of its divisors is an integer number (36904857).

Almost surely, 2^73809713 is an apocalyptic number.

It is an amenable number.

73809713 is a deficient number, since it is larger than the sum of its proper divisors (1).

73809713 is an equidigital number, since it uses as much as digits as its factorization.

73809713 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31752, while the sum is 38.

The square root of 73809713 is about 8591.2579404881. The cubic root of 73809713 is about 419.4734766443.

The spelling of 73809713 in words is "seventy-three million, eight hundred nine thousand, seven hundred thirteen".