84670811 has 2 divisors, whose sum is σ = 84670812. Its totient is φ = 84670810.

The previous prime is 84670801. The next prime is 84670813. The reversal of 84670811 is 11807648.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 84670811 - 2¹⁰ = 84669787 is a prime.

Together with 84670813, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (84670813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42335405 + 42335406.

It is an arithmetic number, because the mean of its divisors is an integer number (42335406).

Almost surely, 2^84670811 is an apocalyptic number.

84670811 is a deficient number, since it is larger than the sum of its proper divisors (1).

84670811 is an equidigital number, since it uses as much as digits as its factorization.

84670811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10752, while the sum is 35.

The square root of 84670811 is about 9201.6743585067. The cubic root of 84670811 is about 439.1146297725.

The spelling of 84670811 in words is "eighty-four million, six hundred seventy thousand, eight hundred eleven".