84683021 has 2 divisors, whose sum is σ = 84683022. Its totient is φ = 84683020.

The previous prime is 84683009. The next prime is 84683051. The reversal of 84683021 is 12038648.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80802121 + 3880900 = 8989^2 + 1970^2 .

It is a cyclic number.

It is not a de Polignac number, because 84683021 - 2⁶ = 84682957 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84683051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42341510 + 42341511.

It is an arithmetic number, because the mean of its divisors is an integer number (42341511).

Almost surely, 2^84683021 is an apocalyptic number.

It is an amenable number.

84683021 is a deficient number, since it is larger than the sum of its proper divisors (1).

84683021 is an equidigital number, since it uses as much as digits as its factorization.

84683021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 84683021 is about 9202.3378007982. The cubic root of 84683021 is about 439.1357363453.

The spelling of 84683021 in words is "eighty-four million, six hundred eighty-three thousand, twenty-one".