65780833 has 2 divisors, whose sum is σ = 65780834. Its totient is φ = 65780832.

The previous prime is 65780809. The next prime is 65780839. The reversal of 65780833 is 33808756.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55845729 + 9935104 = 7473^2 + 3152^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65780833 is a prime.

It is not a weakly prime, because it can be changed into another prime (65780839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32890416 + 32890417.

It is an arithmetic number, because the mean of its divisors is an integer number (32890417).

Almost surely, 2^65780833 is an apocalyptic number.

It is an amenable number.

65780833 is a deficient number, since it is larger than the sum of its proper divisors (1).

65780833 is an equidigital number, since it uses as much as digits as its factorization.

65780833 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 65780833 is about 8110.5383915003. The cubic root of 65780833 is about 403.6761795085.

The spelling of 65780833 in words is "sixty-five million, seven hundred eighty thousand, eight hundred thirty-three".