65915232 has 48 divisors (see below), whose sum is σ = 173859840. Its totient is φ = 21866112.

The previous prime is 65915209. The next prime is 65915233. The reversal of 65915232 is 23251956.

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

It is a super-2 number, since 2×65915232² = 8689635619227648, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 65915193 and 65915202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65915233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19869 + ... + 22947.

It is an arithmetic number, because the mean of its divisors is an integer number (3622080).

Almost surely, 2^65915232 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 65915232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86929920).

65915232 is an abundant number, since it is smaller than the sum of its proper divisors (107944608).

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

65915232 is a wasteful number, since it uses less digits than its factorization.

65915232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3315 (or 3307 counting only the distinct ones).

The product of its digits is 16200, while the sum is 33.

The square root of 65915232 is about 8118.8196186392. The cubic root of 65915232 is about 403.9509138807.

The spelling of 65915232 in words is "sixty-five million, nine hundred fifteen thousand, two hundred thirty-two".