65500830 has 96 divisors (see below), whose sum is σ = 186271488. Its totient is φ = 15897600.

The previous prime is 65500829. The next prime is 65500891. The reversal of 65500830 is 3800556.

65500830 is a `hidden beast` number, since 655 + 0 + 0 + 8 + 3 + 0 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 65500794 and 65500803.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 46740 + ... + 48120.

It is an arithmetic number, because the mean of its divisors is an integer number (1940328).

Almost surely, 2^65500830 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65500830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93135744).

65500830 is an abundant number, since it is smaller than the sum of its proper divisors (120770658).

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

65500830 is a wasteful number, since it uses less digits than its factorization.

65500830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1442 (or 1439 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 65500830 is about 8093.2583055281. The cubic root of 65500830 is about 403.1026016039.

The spelling of 65500830 in words is "sixty-five million, five hundred thousand, eight hundred thirty".