65140608 has 64 divisors (see below), whose sum is σ = 186354000. Its totient is φ = 20041728.

The previous prime is 65140597. The next prime is 65140627. The reversal of 65140608 is 80604156.

It is a tau number, because it is divible by the number of its divisors (64).

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, 1533 + ... + 11516.

Almost surely, 2^65140608 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 65140608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93177000).

65140608 is an abundant number, since it is smaller than the sum of its proper divisors (121213392).

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

65140608 is a wasteful number, since it uses less digits than its factorization.

65140608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13079 (or 13067 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 65140608 is about 8070.9731755223. The cubic root of 65140608 is about 402.3622881893.

The spelling of 65140608 in words is "sixty-five million, one hundred forty thousand, six hundred eight".