65880828 has 144 divisors (see below), whose sum is σ = 195686400. Its totient is φ = 18506880.

The previous prime is 65880827. The next prime is 65880883. The reversal of 65880828 is 82808856.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65880827) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 275533 + ... + 275771.

Almost surely, 2^65880828 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 65880828, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97843200).

65880828 is an abundant number, since it is smaller than the sum of its proper divisors (129805572).

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

65880828 is a wasteful number, since it uses less digits than its factorization.

65880828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312 (or 307 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 45.

The square root of 65880828 is about 8116.7005611886. The cubic root of 65880828 is about 403.8806218535.

The spelling of 65880828 in words is "sixty-five million, eight hundred eighty thousand, eight hundred twenty-eight".