65424880 has 120 divisors (see below), whose sum is σ = 168444576. Its totient is φ = 23569920.

The previous prime is 65424869. The next prime is 65424881. The reversal of 65424880 is 8842456.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65424881) 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, 1768222 + ... + 1768258.

Almost surely, 2^65424880 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 65424880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84222288).

65424880 is an abundant number, since it is smaller than the sum of its proper divisors (103019696).

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

65424880 is a wasteful number, since it uses less digits than its factorization.

65424880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135 (or 98 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 37.

The square root of 65424880 is about 8088.5647676210. The cubic root of 65424880 is about 402.9467385233.

The spelling of 65424880 in words is "sixty-five million, four hundred twenty-four thousand, eight hundred eighty".