80240761 has 2 divisors, whose sum is σ = 80240762. Its totient is φ = 80240760.

The previous prime is 80240749. The next prime is 80240779. The reversal of 80240761 is 16704208.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74287161 + 5953600 = 8619^2 + 2440^2 .

It is a cyclic number.

It is not a de Polignac number, because 80240761 - 2¹¹ = 80238713 is a prime.

It is not a weakly prime, because it can be changed into another prime (80240701) 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, 40120380 + 40120381.

It is an arithmetic number, because the mean of its divisors is an integer number (40120381).

Almost surely, 2^80240761 is an apocalyptic number.

It is an amenable number.

80240761 is a deficient number, since it is larger than the sum of its proper divisors (1).

80240761 is an equidigital number, since it uses as much as digits as its factorization.

80240761 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 80240761 is about 8957.7207480475. The cubic root of 80240761 is about 431.3187583148.

Adding to 80240761 its reverse (16704208), we get a palindrome (96944969).

The spelling of 80240761 in words is "eighty million, two hundred forty thousand, seven hundred sixty-one".