65087761 has 2 divisors, whose sum is σ = 65087762. Its totient is φ = 65087760.

The previous prime is 65087731. The next prime is 65087791. The reversal of 65087761 is 16778056.

It is a balanced prime because it is at equal distance from previous prime (65087731) and next prime (65087791).

It can be written as a sum of positive squares in only one way, i.e., 35046400 + 30041361 = 5920^2 + 5481^2 .

It is a cyclic number.

It is not a de Polignac number, because 65087761 - 2⁹ = 65087249 is a prime.

It is not a weakly prime, because it can be changed into another prime (65087731) 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, 32543880 + 32543881.

It is an arithmetic number, because the mean of its divisors is an integer number (32543881).

Almost surely, 2^65087761 is an apocalyptic number.

It is an amenable number.

65087761 is a deficient number, since it is larger than the sum of its proper divisors (1).

65087761 is an equidigital number, since it uses as much as digits as its factorization.

65087761 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 70560, while the sum is 40.

The square root of 65087761 is about 8067.6986185653. The cubic root of 65087761 is about 402.2534498200.

The spelling of 65087761 in words is "sixty-five million, eighty-seven thousand, seven hundred sixty-one".