65216436 has 48 divisors (see below), whose sum is σ = 165365760. Its totient is φ = 19928160.

The previous prime is 65216413. The next prime is 65216461. The reversal of 65216436 is 63461256.

It is a junction number, because it is equal to n+sod(n) for n = 65216397 and 65216406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2455 + ... + 11681.

It is an arithmetic number, because the mean of its divisors is an integer number (3445120).

Almost surely, 2^65216436 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 65216436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82682880).

65216436 is an abundant number, since it is smaller than the sum of its proper divisors (100149324).

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

65216436 is a wasteful number, since it uses less digits than its factorization.

65216436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9284 (or 9282 counting only the distinct ones).

The product of its digits is 25920, while the sum is 33.

The square root of 65216436 is about 8075.6693840201. The cubic root of 65216436 is about 402.5183531361.

The spelling of 65216436 in words is "sixty-five million, two hundred sixteen thousand, four hundred thirty-six".