65133408 has 48 divisors (see below), whose sum is σ = 171506160. Its totient is φ = 21643776.

The previous prime is 65133407. The next prime is 65133469. The reversal of 65133408 is 80433156.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65133403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37258 + ... + 38966.

It is an arithmetic number, because the mean of its divisors is an integer number (3573045).

Almost surely, 2^65133408 is an apocalyptic number.

It is an amenable number.

65133408 is an abundant number, since it is smaller than the sum of its proper divisors (106372752).

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

65133408 is a wasteful number, since it uses less digits than its factorization.

65133408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2119 (or 2111 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 65133408 is about 8070.5271203311. The cubic root of 65133408 is about 402.3474632575.

The spelling of 65133408 in words is "sixty-five million, one hundred thirty-three thousand, four hundred eight".