65919838 has 8 divisors (see below), whose sum is σ = 99426600. Its totient is φ = 32777640.

The previous prime is 65919809. The next prime is 65919839. The reversal of 65919838 is 83891956.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 65919791 and 65919800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65919839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90688 + ... + 91411.

It is an arithmetic number, because the mean of its divisors is an integer number (12428325).

Almost surely, 2^65919838 is an apocalyptic number.

65919838 is a deficient number, since it is larger than the sum of its proper divisors (33506762).

65919838 is a wasteful number, since it uses less digits than its factorization.

65919838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182282.

The product of its digits is 466560, while the sum is 49.

The square root of 65919838 is about 8119.1032756087. The cubic root of 65919838 is about 403.9603227053.

The spelling of 65919838 in words is "sixty-five million, nine hundred nineteen thousand, eight hundred thirty-eight".