65968520 has 16 divisors (see below), whose sum is σ = 148429260. Its totient is φ = 26387392.

The previous prime is 65968519. The next prime is 65968523. The reversal of 65968520 is 2586956.

It can be written as a sum of positive squares in 2 ways, for example, as 58094884 + 7873636 = 7622^2 + 2806^2 .

It is not an unprimeable number, because it can be changed into a prime (65968523) 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, 824567 + ... + 824646.

Almost surely, 2^65968520 is an apocalyptic number.

It is an amenable number.

65968520 is an abundant number, since it is smaller than the sum of its proper divisors (82460740).

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

65968520 is a wasteful number, since it uses less digits than its factorization.

65968520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1649224 (or 1649220 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 41.

The square root of 65968520 is about 8122.1007134854. The cubic root of 65968520 is about 404.0597402099.

The spelling of 65968520 in words is "sixty-five million, nine hundred sixty-eight thousand, five hundred twenty".