65620970960 has 20 divisors (see below), whose sum is σ = 152568757668. Its totient is φ = 26248388352.

The previous prime is 65620970957. The next prime is 65620971001. The reversal of 65620970960 is 6907902656.

It can be written as a sum of positive squares in 2 ways, for example, as 14729220496 + 50891750464 = 121364^2 + 225592^2 .

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

It is a super-2 number, since 2×65620970960² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 65620970899 and 65620970908.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 410130989 + ... + 410131148.

Almost surely, 2^65620970960 is an apocalyptic number.

It is an amenable number.

65620970960 is an abundant number, since it is smaller than the sum of its proper divisors (86947786708).

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

65620970960 is a wasteful number, since it uses less digits than its factorization.

65620970960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820262150 (or 820262144 counting only the distinct ones).

The product of its (nonzero) digits is 1224720, while the sum is 50.

The spelling of 65620970960 in words is "sixty-five billion, six hundred twenty million, nine hundred seventy thousand, nine hundred sixty".