65000881 has 8 divisors (see below), whose sum is σ = 74642400. Its totient is φ = 55981440.

The previous prime is 65000863. The next prime is 65000917. The reversal of 65000881 is 18800056.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 65000881 - 2⁵ = 65000849 is a prime.

It is a super-2 number, since 2×65000881² = 8450229061552322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65000081) 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, 155296 + ... + 155713.

It is an arithmetic number, because the mean of its divisors is an integer number (9330300).

Almost surely, 2^65000881 is an apocalyptic number.

It is an amenable number.

65000881 is a deficient number, since it is larger than the sum of its proper divisors (9641519).

65000881 is a wasteful number, since it uses less digits than its factorization.

65000881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311039.

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 65000881 is about 8062.3123854140. The cubic root of 65000881 is about 402.0743923940.

The spelling of 65000881 in words is "sixty-five million, eight hundred eighty-one", and thus it is an aban number.