65216448 has 224 divisors, whose sum is σ = 216529920. Its totient is φ = 19077120.

The previous prime is 65216413. The next prime is 65216461. The reversal of 65216448 is 84461256.

65216448 is a `hidden beast` number, since 6 + 5 + 2 + 1 + 644 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 893340 + ... + 893412.

Almost surely, 2^65216448 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 65216448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108264960).

65216448 is an abundant number, since it is smaller than the sum of its proper divisors (151313472).

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

65216448 is a wasteful number, since it uses less digits than its factorization.

65216448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152 (or 136 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 65216448 is about 8075.6701269926. The cubic root of 65216448 is about 402.5183778242.

The spelling of 65216448 in words is "sixty-five million, two hundred sixteen thousand, four hundred forty-eight".