65635388664 has 32 divisors (see below), whose sum is σ = 164123424720. Its totient is φ = 21873802496.

The previous prime is 65635388659. The next prime is 65635388669. The reversal of 65635388664 is 46688353656.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (65635388659) and next prime (65635388669).

It is a junction number, because it is equal to n+sod(n) for n = 65635388598 and 65635388607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65635388669) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 175317 + ... + 402500.

Almost surely, 2^65635388664 is an apocalyptic number.

It is an amenable number.

65635388664 is an abundant number, since it is smaller than the sum of its proper divisors (98488036056).

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

65635388664 is a wasteful number, since it uses less digits than its factorization.

65635388664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 582559 (or 582555 counting only the distinct ones).

The product of its digits is 74649600, while the sum is 60.

The spelling of 65635388664 in words is "sixty-five billion, six hundred thirty-five million, three hundred eighty-eight thousand, six hundred sixty-four".