65445996 has 144 divisors (see below), whose sum is σ = 197342208. Its totient is φ = 16515840.

The previous prime is 65445983. The next prime is 65446001. The reversal of 65445996 is 69954456.

65445996 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 477640 + ... + 477776.

It is an arithmetic number, because the mean of its divisors is an integer number (1370432).

Almost surely, 2^65445996 is an apocalyptic number.

65445996 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 65445996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98671104).

65445996 is an abundant number, since it is smaller than the sum of its proper divisors (131896212).

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

65445996 is a wasteful number, since it uses less digits than its factorization.

65445996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220 (or 207 counting only the distinct ones).

The product of its digits is 1166400, while the sum is 48.

The square root of 65445996 is about 8089.8699618721. The cubic root of 65445996 is about 402.9900844599.

The spelling of 65445996 in words is "sixty-five million, four hundred forty-five thousand, nine hundred ninety-six".