65097680 has 20 divisors (see below), whose sum is σ = 151352292. Its totient is φ = 26039040.

The previous prime is 65097673. The next prime is 65097691. The reversal of 65097680 is 8679056.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 48385936 + 16711744 = 6956^2 + 4088^2 .

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 406781 + ... + 406940.

Almost surely, 2^65097680 is an apocalyptic number.

It is an amenable number.

65097680 is an abundant number, since it is smaller than the sum of its proper divisors (86254612).

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

65097680 is a wasteful number, since it uses less digits than its factorization.

65097680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 813734 (or 813728 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 41.

The square root of 65097680 is about 8068.3133305543. The cubic root of 65097680 is about 402.2738824853.

The spelling of 65097680 in words is "sixty-five million, ninety-seven thousand, six hundred eighty".