73367813 has 2 divisors, whose sum is σ = 73367814. Its totient is φ = 73367812.

The previous prime is 73367809. The next prime is 73367839. The reversal of 73367813 is 31876337.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55920484 + 17447329 = 7478^2 + 4177^2 .

It is a cyclic number.

It is not a de Polignac number, because 73367813 - 2² = 73367809 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73367803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36683906 + 36683907.

It is an arithmetic number, because the mean of its divisors is an integer number (36683907).

Almost surely, 2^73367813 is an apocalyptic number.

It is an amenable number.

73367813 is a deficient number, since it is larger than the sum of its proper divisors (1).

73367813 is an equidigital number, since it uses as much as digits as its factorization.

73367813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 63504, while the sum is 38.

The square root of 73367813 is about 8565.5013280018. The cubic root of 73367813 is about 418.6346688253.

The spelling of 73367813 in words is "seventy-three million, three hundred sixty-seven thousand, eight hundred thirteen".