85604969 has 2 divisors, whose sum is σ = 85604970. Its totient is φ = 85604968.

The previous prime is 85604951. The next prime is 85604999. The reversal of 85604969 is 96940658.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83083225 + 2521744 = 9115^2 + 1588^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85604969 is a prime.

It is a super-2 number, since 2×85604969² = 14656421434981922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (85604999) 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, 42802484 + 42802485.

It is an arithmetic number, because the mean of its divisors is an integer number (42802485).

Almost surely, 2^85604969 is an apocalyptic number.

It is an amenable number.

85604969 is a deficient number, since it is larger than the sum of its proper divisors (1).

85604969 is an equidigital number, since it uses as much as digits as its factorization.

85604969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 466560, while the sum is 47.

The square root of 85604969 is about 9252.2953368340. The cubic root of 85604969 is about 440.7236181790.

The spelling of 85604969 in words is "eighty-five million, six hundred four thousand, nine hundred sixty-nine".