84080641 has 2 divisors, whose sum is σ = 84080642. Its totient is φ = 84080640.

The previous prime is 84080639. The next prime is 84080653. The reversal of 84080641 is 14608048.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74649600 + 9431041 = 8640^2 + 3071^2 .

It is a cyclic number.

It is not a de Polignac number, because 84080641 - 2¹ = 84080639 is a prime.

Together with 84080639, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (84080671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42040320 + 42040321.

It is an arithmetic number, because the mean of its divisors is an integer number (42040321).

Almost surely, 2^84080641 is an apocalyptic number.

It is an amenable number.

84080641 is a deficient number, since it is larger than the sum of its proper divisors (1).

84080641 is an equidigital number, since it uses as much as digits as its factorization.

84080641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 84080641 is about 9169.5496617882. The cubic root of 84080641 is about 438.0920155157.

Adding to 84080641 its reverse (14608048), we get a palindrome (98688689).

The spelling of 84080641 in words is "eighty-four million, eighty thousand, six hundred forty-one".