84821707 has 2 divisors, whose sum is σ = 84821708. Its totient is φ = 84821706.

The previous prime is 84821689. The next prime is 84821713. The reversal of 84821707 is 70712848.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 84821707 - 2²³ = 76433099 is a prime.

It is not a weakly prime, because it can be changed into another prime (84821507) 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, 42410853 + 42410854.

It is an arithmetic number, because the mean of its divisors is an integer number (42410854).

Almost surely, 2^84821707 is an apocalyptic number.

84821707 is a deficient number, since it is larger than the sum of its proper divisors (1).

84821707 is an equidigital number, since it uses as much as digits as its factorization.

84821707 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25088, while the sum is 37.

The square root of 84821707 is about 9209.8700859458. The cubic root of 84821707 is about 439.3753308618.

The spelling of 84821707 in words is "eighty-four million, eight hundred twenty-one thousand, seven hundred seven".