85723259 has 2 divisors, whose sum is σ = 85723260. Its totient is φ = 85723258.

The previous prime is 85723249. The next prime is 85723273. The reversal of 85723259 is 95232758.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85723259 - 2¹⁶ = 85657723 is a prime.

It is not a weakly prime, because it can be changed into another prime (85723249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42861629 + 42861630.

It is an arithmetic number, because the mean of its divisors is an integer number (42861630).

Almost surely, 2^85723259 is an apocalyptic number.

85723259 is a deficient number, since it is larger than the sum of its proper divisors (1).

85723259 is an equidigital number, since it uses as much as digits as its factorization.

85723259 is an evil number, because the sum of its binary digits is even.

The product of its digits is 151200, while the sum is 41.

The square root of 85723259 is about 9258.6855978589. The cubic root of 85723259 is about 440.9265238556.

The spelling of 85723259 in words is "eighty-five million, seven hundred twenty-three thousand, two hundred fifty-nine".