65730761 has 2 divisors, whose sum is σ = 65730762. Its totient is φ = 65730760.

The previous prime is 65730751. The next prime is 65730773. The reversal of 65730761 is 16703756.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62647225 + 3083536 = 7915^2 + 1756^2 .

It is a cyclic number.

It is not a de Polignac number, because 65730761 - 2⁶ = 65730697 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (65730701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32865380 + 32865381.

It is an arithmetic number, because the mean of its divisors is an integer number (32865381).

Almost surely, 2^65730761 is an apocalyptic number.

It is an amenable number.

65730761 is a deficient number, since it is larger than the sum of its proper divisors (1).

65730761 is an equidigital number, since it uses as much as digits as its factorization.

65730761 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26460, while the sum is 35.

The square root of 65730761 is about 8107.4509557567. The cubic root of 65730761 is about 403.5737281634.

The spelling of 65730761 in words is "sixty-five million, seven hundred thirty thousand, seven hundred sixty-one".