73685761 has 2 divisors, whose sum is σ = 73685762. Its totient is φ = 73685760.

The previous prime is 73685747. The next prime is 73685783. The reversal of 73685761 is 16758637.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65529025 + 8156736 = 8095^2 + 2856^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73685761 is a prime.

It is not a weakly prime, because it can be changed into another prime (73685561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36842880 + 36842881.

It is an arithmetic number, because the mean of its divisors is an integer number (36842881).

Almost surely, 2^73685761 is an apocalyptic number.

It is an amenable number.

73685761 is a deficient number, since it is larger than the sum of its proper divisors (1).

73685761 is an equidigital number, since it uses as much as digits as its factorization.

73685761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 211680, while the sum is 43.

The square root of 73685761 is about 8584.0410646734. The cubic root of 73685761 is about 419.2385314631.

The spelling of 73685761 in words is "seventy-three million, six hundred eighty-five thousand, seven hundred sixty-one".