65022980 has 72 divisors (see below), whose sum is σ = 152184984. Its totient is φ = 23316480.

The previous prime is 65022967. The next prime is 65022989. The reversal of 65022980 is 8922056.

It can be written as a sum of positive squares in 4 ways, for example, as 894916 + 64128064 = 946^2 + 8008^2 .

It is not an unprimeable number, because it can be changed into a prime (65022989) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 234602 + ... + 234878.

Almost surely, 2^65022980 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 65022980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76092492).

65022980 is an abundant number, since it is smaller than the sum of its proper divisors (87162004).

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

65022980 is a wasteful number, since it uses less digits than its factorization.

65022980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405 (or 392 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 65022980 is about 8063.6827814591. The cubic root of 65022980 is about 402.1199529828.

The spelling of 65022980 in words is "sixty-five million, twenty-two thousand, nine hundred eighty".