65401332 has 12 divisors (see below), whose sum is σ = 152603136. Its totient is φ = 21800440.

The previous prime is 65401327. The next prime is 65401337. The reversal of 65401332 is 23310456.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (65401327) and next prime (65401337).

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65401337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2725044 + ... + 2725067.

It is an arithmetic number, because the mean of its divisors is an integer number (12716928).

Almost surely, 2^65401332 is an apocalyptic number.

It is an amenable number.

65401332 is an abundant number, since it is smaller than the sum of its proper divisors (87201804).

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

65401332 is a wasteful number, since it uses less digits than its factorization.

65401332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5450118 (or 5450116 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 65401332 is about 8087.1090013675. The cubic root of 65401332 is about 402.8983892897.

Adding to 65401332 its reverse (23310456), we get a palindrome (88711788).

The spelling of 65401332 in words is "sixty-five million, four hundred one thousand, three hundred thirty-two".