65006620 has 48 divisors (see below), whose sum is σ = 158977728. Its totient is φ = 21864960.

The previous prime is 65006609. The next prime is 65006621. The reversal of 65006620 is 2660056.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65006621) 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 15 ways as a sum of consecutive naturals, for example, 3040 + ... + 11800.

It is an arithmetic number, because the mean of its divisors is an integer number (3312036).

Almost surely, 2^65006620 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 65006620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79488864).

65006620 is an abundant number, since it is smaller than the sum of its proper divisors (93971108).

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

65006620 is a wasteful number, since it uses less digits than its factorization.

65006620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8830 (or 8828 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 65006620 is about 8062.6682928172. The cubic root of 65006620 is about 402.0862252440.

Adding to 65006620 its reverse (2660056), we get a palindrome (67666676).

The spelling of 65006620 in words is "sixty-five million, six thousand, six hundred twenty".