84011647 has 2 divisors, whose sum is σ = 84011648. Its totient is φ = 84011646.

The previous prime is 84011633. The next prime is 84011651. The reversal of 84011647 is 74611048.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 84011647 - 2¹¹ = 84009599 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 (84011047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42005823 + 42005824.

It is an arithmetic number, because the mean of its divisors is an integer number (42005824).

Almost surely, 2^84011647 is an apocalyptic number.

84011647 is a deficient number, since it is larger than the sum of its proper divisors (1).

84011647 is an equidigital number, since it uses as much as digits as its factorization.

84011647 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 84011647 is about 9165.7867638299. The cubic root of 84011647 is about 437.9721544261.

The spelling of 84011647 in words is "eighty-four million, eleven thousand, six hundred forty-seven".