84665923 has 2 divisors, whose sum is σ = 84665924. Its totient is φ = 84665922.

The previous prime is 84665849. The next prime is 84665969. The reversal of 84665923 is 32956648.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 84665923 - 2¹³ = 84657731 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 84665923.

It is not a weakly prime, because it can be changed into another prime (84665983) 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, 42332961 + 42332962.

It is an arithmetic number, because the mean of its divisors is an integer number (42332962).

Almost surely, 2^84665923 is an apocalyptic number.

84665923 is a deficient number, since it is larger than the sum of its proper divisors (1).

84665923 is an equidigital number, since it uses as much as digits as its factorization.

84665923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 311040, while the sum is 43.

The square root of 84665923 is about 9201.4087508381. The cubic root of 84665923 is about 439.1061796600.

The spelling of 84665923 in words is "eighty-four million, six hundred sixty-five thousand, nine hundred twenty-three".