65848981 has 4 divisors (see below), whose sum is σ = 71835264. Its totient is φ = 59862700.

The previous prime is 65848957. The next prime is 65849009. The reversal of 65848981 is 18984856.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 65848981 - 2²³ = 57460373 is a prime.

It is a super-2 number, since 2×65848981² = 8672176597476722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65848381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2993125 + ... + 2993146.

It is an arithmetic number, because the mean of its divisors is an integer number (17958816).

Almost surely, 2^65848981 is an apocalyptic number.

It is an amenable number.

65848981 is a deficient number, since it is larger than the sum of its proper divisors (5986283).

65848981 is a wasteful number, since it uses less digits than its factorization.

65848981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5986282.

The product of its digits is 552960, while the sum is 49.

The square root of 65848981 is about 8114.7385047209. The cubic root of 65848981 is about 403.8155323088.

The spelling of 65848981 in words is "sixty-five million, eight hundred forty-eight thousand, nine hundred eighty-one".