65520799 has 2 divisors, whose sum is σ = 65520800. Its totient is φ = 65520798.

The previous prime is 65520787. The next prime is 65520811. The reversal of 65520799 is 99702556.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (65520787) and next prime (65520811).

It is a cyclic number.

It is not a de Polignac number, because 65520799 - 2¹¹ = 65518751 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (65520709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32760399 + 32760400.

It is an arithmetic number, because the mean of its divisors is an integer number (32760400).

Almost surely, 2^65520799 is an apocalyptic number.

65520799 is a deficient number, since it is larger than the sum of its proper divisors (1).

65520799 is an equidigital number, since it uses as much as digits as its factorization.

65520799 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 170100, while the sum is 43.

The square root of 65520799 is about 8094.4918926391. The cubic root of 65520799 is about 403.1435615835.

The spelling of 65520799 in words is "sixty-five million, five hundred twenty thousand, seven hundred ninety-nine".