65057798 has 16 divisors (see below), whose sum is σ = 105280560. Its totient is φ = 29973216.

The previous prime is 65057789. The next prime is 65057801. The reversal of 65057798 is 89775056.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 15236 + ... + 19032.

It is an arithmetic number, because the mean of its divisors is an integer number (6580035).

Almost surely, 2^65057798 is an apocalyptic number.

65057798 is a deficient number, since it is larger than the sum of its proper divisors (40222762).

65057798 is a wasteful number, since it uses less digits than its factorization.

65057798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4471.

The product of its (nonzero) digits is 529200, while the sum is 47.

The square root of 65057798 is about 8065.8414316177. The cubic root of 65057798 is about 402.1917148646.

The spelling of 65057798 in words is "sixty-five million, fifty-seven thousand, seven hundred ninety-eight".