65603970 has 48 divisors (see below), whose sum is σ = 172748160. Its totient is φ = 17271072.

The previous prime is 65603959. The next prime is 65603971. The reversal of 65603970 is 7930656.

It is a happy number.

65603970 is a `hidden beast` number, since 6 + 560 + 3 + 97 + 0 = 666.

It is not an unprimeable number, because it can be changed into a prime (65603971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2497 + ... + 11723.

It is an arithmetic number, because the mean of its divisors is an integer number (3598920).

Almost surely, 2^65603970 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65603970, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86374080).

65603970 is an abundant number, since it is smaller than the sum of its proper divisors (107144190).

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

65603970 is a wasteful number, since it uses less digits than its factorization.

65603970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9319 (or 9316 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 36.

The square root of 65603970 is about 8099.6277692250. The cubic root of 65603970 is about 403.3140706750.

The spelling of 65603970 in words is "sixty-five million, six hundred three thousand, nine hundred seventy".