73680077 has 2 divisors, whose sum is σ = 73680078. Its totient is φ = 73680076.

The previous prime is 73680073. The next prime is 73680143. The reversal of 73680077 is 77008637.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50965321 + 22714756 = 7139^2 + 4766^2 .

It is a cyclic number.

It is not a de Polignac number, because 73680077 - 2² = 73680073 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 73680077.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73680071) 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, 36840038 + 36840039.

It is an arithmetic number, because the mean of its divisors is an integer number (36840039).

Almost surely, 2^73680077 is an apocalyptic number.

It is an amenable number.

73680077 is a deficient number, since it is larger than the sum of its proper divisors (1).

73680077 is an equidigital number, since it uses as much as digits as its factorization.

73680077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 49392, while the sum is 38.

The square root of 73680077 is about 8583.7099787912. The cubic root of 73680077 is about 419.2277513926.

The spelling of 73680077 in words is "seventy-three million, six hundred eighty thousand, seventy-seven".