65889516 has 144 divisors (see below), whose sum is σ = 199487232. Its totient is φ = 16732800.

The previous prime is 65889487. The next prime is 65889521. The reversal of 65889516 is 61598856.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 394465 + ... + 394631.

It is an arithmetic number, because the mean of its divisors is an integer number (1385328).

Almost surely, 2^65889516 is an apocalyptic number.

65889516 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65889516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99743616).

65889516 is an abundant number, since it is smaller than the sum of its proper divisors (133597716).

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

65889516 is a wasteful number, since it uses less digits than its factorization.

65889516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260 (or 251 counting only the distinct ones).

The product of its digits is 518400, while the sum is 48.

The square root of 65889516 is about 8117.2357363822. The cubic root of 65889516 is about 403.8983749223.

The spelling of 65889516 in words is "sixty-five million, eight hundred eighty-nine thousand, five hundred sixteen".