65283021 has 6 divisors (see below), whose sum is σ = 94297710. Its totient is φ = 43522008.

The previous prime is 65283017. The next prime is 65283041. The reversal of 65283021 is 12038256.

65283021 is a `hidden beast` number, since 652 + 8 + 3 + 0 + 2 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 40182921 + 25100100 = 6339^2 + 5010^2 .

It is not a de Polignac number, because 65283021 - 2² = 65283017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65283041) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3626826 + ... + 3626843.

It is an arithmetic number, because the mean of its divisors is an integer number (15716285).

Almost surely, 2^65283021 is an apocalyptic number.

It is an amenable number.

65283021 is a deficient number, since it is larger than the sum of its proper divisors (29014689).

65283021 is a wasteful number, since it uses less digits than its factorization.

65283021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7253675 (or 7253672 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 65283021 is about 8079.7909007597. The cubic root of 65283021 is about 402.6552949358.

The spelling of 65283021 in words is "sixty-five million, two hundred eighty-three thousand, twenty-one".