73697761 has 2 divisors, whose sum is σ = 73697762. Its totient is φ = 73697760.

The previous prime is 73697753. The next prime is 73697777. The reversal of 73697761 is 16779637.

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., 45819361 + 27878400 = 6769^2 + 5280^2 .

It is a cyclic number.

It is not a de Polignac number, because 73697761 - 2³ = 73697753 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (73697731) 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, 36848880 + 36848881.

It is an arithmetic number, because the mean of its divisors is an integer number (36848881).

Almost surely, 2^73697761 is an apocalyptic number.

It is an amenable number.

73697761 is a deficient number, since it is larger than the sum of its proper divisors (1).

73697761 is an equidigital number, since it uses as much as digits as its factorization.

73697761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 333396, while the sum is 46.

The square root of 73697761 is about 8584.7400077114. The cubic root of 73697761 is about 419.2612884120.

The spelling of 73697761 in words is "seventy-three million, six hundred ninety-seven thousand, seven hundred sixty-one".