65493888 has 32 divisors (see below), whose sum is σ = 173969160. Its totient is φ = 21831168.

The previous prime is 65493871. The next prime is 65493899. The reversal of 65493888 is 88839456.

It is a tau number, because it is divible by the number of its divisors (32).

It is a self number, because there is not a number n which added to its sum of digits gives 65493888.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84895 + ... + 85662.

Almost surely, 2^65493888 is an apocalyptic number.

It is an amenable number.

65493888 is an abundant number, since it is smaller than the sum of its proper divisors (108475272).

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

65493888 is a wasteful number, since it uses less digits than its factorization.

65493888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170574 (or 170562 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 51.

The square root of 65493888 is about 8092.8294186891. The cubic root of 65493888 is about 403.0883603741.

The spelling of 65493888 in words is "sixty-five million, four hundred ninety-three thousand, eight hundred eighty-eight".