65064688 has 40 divisors (see below), whose sum is σ = 137123168. Its totient is φ = 29728512.

The previous prime is 65064679. The next prime is 65064697. The reversal of 65064688 is 88646056.

It is an interprime number because it is at equal distance from previous prime (65064679) and next prime (65064697).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19906 + ... + 22942.

Almost surely, 2^65064688 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65064688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68561584).

65064688 is an abundant number, since it is smaller than the sum of its proper divisors (72058480).

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

65064688 is a wasteful number, since it uses less digits than its factorization.

65064688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3161 (or 3155 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 43.

The square root of 65064688 is about 8066.2685301197. The cubic root of 65064688 is about 402.2059125123.

The spelling of 65064688 in words is "sixty-five million, sixty-four thousand, six hundred eighty-eight".