65042880 has 112 divisors (see below), whose sum is σ = 236037120. Its totient is φ = 14865408.

The previous prime is 65042869. The next prime is 65042881. The reversal of 65042880 is 8824056.

It is a tau number, because it is divible by the number of its divisors (112).

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65042881) 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, 1881 + ... + 11559.

Almost surely, 2^65042880 is an apocalyptic number.

65042880 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65042880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118018560).

65042880 is an abundant number, since it is smaller than the sum of its proper divisors (170994240).

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

65042880 is a wasteful number, since it uses less digits than its factorization.

65042880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9706 (or 9696 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 65042880 is about 8064.9166145720. The cubic root of 65042880 is about 402.1609711523.

The spelling of 65042880 in words is "sixty-five million, forty-two thousand, eight hundred eighty".