65889936 has 160 divisors (see below), whose sum is σ = 219628800. Its totient is φ = 18755712.

The previous prime is 65889931. The next prime is 65889997. The reversal of 65889936 is 63998856.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (65889931) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 244810 + ... + 245078.

It is an arithmetic number, because the mean of its divisors is an integer number (1372680).

Almost surely, 2^65889936 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65889936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109814400).

65889936 is an abundant number, since it is smaller than the sum of its proper divisors (153738864).

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

65889936 is an equidigital number, since it uses as much as digits as its factorization.

65889936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305 (or 281 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 54.

The square root of 65889936 is about 8117.2616072171. The cubic root of 65889936 is about 403.8992331112.

The spelling of 65889936 in words is "sixty-five million, eight hundred eighty-nine thousand, nine hundred thirty-six".