284696021 has 2 divisors, whose sum is σ = 284696022. Its totient is φ = 284696020.

The previous prime is 284695979. The next prime is 284696023. The reversal of 284696021 is 120696482.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 199798225 + 84897796 = 14135^2 + 9214^2 .

It is a cyclic number.

It is not a de Polignac number, because 284696021 - 2²⁶ = 217587157 is a prime.

Together with 284696023, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (284696023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142348010 + 142348011.

It is an arithmetic number, because the mean of its divisors is an integer number (142348011).

Almost surely, 2^284696021 is an apocalyptic number.

It is an amenable number.

284696021 is a deficient number, since it is larger than the sum of its proper divisors (1).

284696021 is an equidigital number, since it uses as much as digits as its factorization.

284696021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 284696021 is about 16872.9375332217. The cubic root of 284696021 is about 657.8503838775.

The spelling of 284696021 in words is "two hundred eighty-four million, six hundred ninety-six thousand, twenty-one".