65660232 has 128 divisors (see below), whose sum is σ = 189112320. Its totient is φ = 18816000.

The previous prime is 65660207. The next prime is 65660251. The reversal of 65660232 is 23206656.

It is a super-2 number, since 2×65660232² = 8622532132587648, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 65660232.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 581008 + ... + 581120.

It is an arithmetic number, because the mean of its divisors is an integer number (1477440).

Almost surely, 2^65660232 is an apocalyptic number.

65660232 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65660232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94556160).

65660232 is an abundant number, since it is smaller than the sum of its proper divisors (123452088).

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

65660232 is a wasteful number, since it uses less digits than its factorization.

65660232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235 (or 231 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 65660232 is about 8103.1001474744. The cubic root of 65660232 is about 403.4293318534.

Adding to 65660232 its reverse (23206656), we get a palindrome (88866888).

The spelling of 65660232 in words is "sixty-five million, six hundred sixty thousand, two hundred thirty-two".