84808651 has 2 divisors, whose sum is σ = 84808652. Its totient is φ = 84808650.

The previous prime is 84808643. The next prime is 84808663. The reversal of 84808651 is 15680848.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84808651 - 2³ = 84808643 is a prime.

It is not a weakly prime, because it can be changed into another prime (84808681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42404325 + 42404326.

It is an arithmetic number, because the mean of its divisors is an integer number (42404326).

Almost surely, 2^84808651 is an apocalyptic number.

84808651 is a deficient number, since it is larger than the sum of its proper divisors (1).

84808651 is an equidigital number, since it uses as much as digits as its factorization.

84808651 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 61440, while the sum is 40.

The square root of 84808651 is about 9209.1612538819. The cubic root of 84808651 is about 439.3527864021.

The spelling of 84808651 in words is "eighty-four million, eight hundred eight thousand, six hundred fifty-one".