65064880 has 20 divisors (see below), whose sum is σ = 151276032. Its totient is φ = 26025920.

The previous prime is 65064869. The next prime is 65064887. The reversal of 65064880 is 8846056.

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (65064887) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 406576 + ... + 406735.

Almost surely, 2^65064880 is an apocalyptic number.

It is an amenable number.

65064880 is an abundant number, since it is smaller than the sum of its proper divisors (86211152).

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

65064880 is a wasteful number, since it uses less digits than its factorization.

65064880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 813324 (or 813318 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 65064880 is about 8066.2804315248. The cubic root of 65064880 is about 402.2063081363.

The spelling of 65064880 in words is "sixty-five million, sixty-four thousand, eight hundred eighty".