65213632 has 56 divisors (see below), whose sum is σ = 149504400. Its totient is φ = 27893760.

The previous prime is 65213623. The next prime is 65213641. The reversal of 65213632 is 23631256.

It is an interprime number because it is at equal distance from previous prime (65213623) and next prime (65213641).

It is a self number, because there is not a number n which added to its sum of digits gives 65213632.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9244 + ... + 14692.

Almost surely, 2^65213632 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 65213632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74752200).

65213632 is an abundant number, since it is smaller than the sum of its proper divisors (84290768).

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

65213632 is a wasteful number, since it uses less digits than its factorization.

65213632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5489 (or 5479 counting only the distinct ones).

The product of its digits is 6480, while the sum is 28.

The square root of 65213632 is about 8075.4957742544. The cubic root of 65213632 is about 402.5125842548.

Adding to 65213632 its reverse (23631256), we get a palindrome (88844888).

It can be divided in two parts, 6521 and 3632, that added together give a triangular number (10153 = T₁₄₂).

The spelling of 65213632 in words is "sixty-five million, two hundred thirteen thousand, six hundred thirty-two".