65706020 has 48 divisors (see below), whose sum is σ = 147193200. Its totient is φ = 24551424.

The previous prime is 65706013. The next prime is 65706023. The reversal of 65706020 is 2060756.

It can be written as a sum of positive squares in 8 ways, for example, as 3232804 + 62473216 = 1798^2 + 7904^2 .

It is not an unprimeable number, because it can be changed into a prime (65706023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50012 + ... + 51308.

It is an arithmetic number, because the mean of its divisors is an integer number (3066525).

Almost surely, 2^65706020 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 65706020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73596600).

65706020 is an abundant number, since it is smaller than the sum of its proper divisors (81487180).

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

65706020 is a wasteful number, since it uses less digits than its factorization.

65706020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1472 (or 1470 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 65706020 is about 8105.9249934847. The cubic root of 65706020 is about 403.5230868783.

Adding to 65706020 its reverse (2060756), we get a palindrome (67766776).

The spelling of 65706020 in words is "sixty-five million, seven hundred six thousand, twenty".