65651232 has 48 divisors (see below), whose sum is σ = 181409760. Its totient is φ = 20731392.

The previous prime is 65651231. The next prime is 65651233. The reversal of 65651232 is 23215656.

It is an interprime number because it is at equal distance from previous prime (65651231) and next prime (65651233).

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 65651232.

It is not an unprimeable number, because it can be changed into a prime (65651231) by changing a digit.

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, 16173 + ... + 19820.

It is an arithmetic number, because the mean of its divisors is an integer number (3779370).

Almost surely, 2^65651232 is an apocalyptic number.

It is an amenable number.

65651232 is an abundant number, since it is smaller than the sum of its proper divisors (115758528).

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

65651232 is a wasteful number, since it uses less digits than its factorization.

65651232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36025 (or 36017 counting only the distinct ones).

The product of its digits is 10800, while the sum is 30.

The square root of 65651232 is about 8102.5447854362. The cubic root of 65651232 is about 403.4108984233.

Adding to 65651232 its reverse (23215656), we get a palindrome (88866888).

The spelling of 65651232 in words is "sixty-five million, six hundred fifty-one thousand, two hundred thirty-two".