73680773 has 2 divisors, whose sum is σ = 73680774. Its totient is φ = 73680772.

The previous prime is 73680767. The next prime is 73680787. The reversal of 73680773 is 37708637.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53904964 + 19775809 = 7342^2 + 4447^2 .

It is a cyclic number.

It is not a de Polignac number, because 73680773 - 2⁶ = 73680709 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 73680773.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73680073) 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, 36840386 + 36840387.

It is an arithmetic number, because the mean of its divisors is an integer number (36840387).

Almost surely, 2^73680773 is an apocalyptic number.

It is an amenable number.

73680773 is a deficient number, since it is larger than the sum of its proper divisors (1).

73680773 is an equidigital number, since it uses as much as digits as its factorization.

73680773 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 148176, while the sum is 41.

The square root of 73680773 is about 8583.7505206058. The cubic root of 73680773 is about 419.2290714310.

The spelling of 73680773 in words is "seventy-three million, six hundred eighty thousand, seven hundred seventy-three".