73031737 has 2 divisors, whose sum is σ = 73031738. Its totient is φ = 73031736.

The previous prime is 73031689. The next prime is 73031741. The reversal of 73031737 is 73713037.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60279696 + 12752041 = 7764^2 + 3571^2 .

It is a cyclic number.

It is not a de Polignac number, because 73031737 - 2¹¹ = 73029689 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 73031699 and 73031708.

It is not a weakly prime, because it can be changed into another prime (73031767) 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, 36515868 + 36515869.

It is an arithmetic number, because the mean of its divisors is an integer number (36515869).

Almost surely, 2^73031737 is an apocalyptic number.

It is an amenable number.

73031737 is a deficient number, since it is larger than the sum of its proper divisors (1).

73031737 is an equidigital number, since it uses as much as digits as its factorization.

73031737 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9261, while the sum is 31.

The square root of 73031737 is about 8545.8608109423. The cubic root of 73031737 is about 417.9944769308.

The spelling of 73031737 in words is "seventy-three million, thirty-one thousand, seven hundred thirty-seven".