84063649 has 2 divisors, whose sum is σ = 84063650. Its totient is φ = 84063648.

The previous prime is 84063647. The next prime is 84063677. The reversal of 84063649 is 94636048.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83174400 + 889249 = 9120^2 + 943^2 .

It is a cyclic number.

It is not a de Polignac number, because 84063649 - 2¹ = 84063647 is a prime.

Together with 84063647, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (84063647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42031824 + 42031825.

It is an arithmetic number, because the mean of its divisors is an integer number (42031825).

Almost surely, 2^84063649 is an apocalyptic number.

It is an amenable number.

84063649 is a deficient number, since it is larger than the sum of its proper divisors (1).

84063649 is an equidigital number, since it uses as much as digits as its factorization.

84063649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 124416, while the sum is 40.

The square root of 84063649 is about 9168.6230700144. The cubic root of 84063649 is about 438.0625019402.

The spelling of 84063649 in words is "eighty-four million, sixty-three thousand, six hundred forty-nine".