65889750 has 32 divisors (see below), whose sum is σ = 164462688. Its totient is φ = 17570400.

The previous prime is 65889731. The next prime is 65889751. The reversal of 65889750 is 5798856.

It is a self number, because there is not a number n which added to its sum of digits gives 65889750.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65889751) 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 in 15 ways as a sum of consecutive naturals, for example, 43177 + ... + 44676.

It is an arithmetic number, because the mean of its divisors is an integer number (5139459).

Almost surely, 2^65889750 is an apocalyptic number.

65889750 is an abundant number, since it is smaller than the sum of its proper divisors (98572938).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65889750 is a wasteful number, since it uses less digits than its factorization.

65889750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87873 (or 87863 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 48.

The square root of 65889750 is about 8117.2501501432. The cubic root of 65889750 is about 403.8988530565.

The spelling of 65889750 in words is "sixty-five million, eight hundred eighty-nine thousand, seven hundred fifty".