85390567 has 2 divisors, whose sum is σ = 85390568. Its totient is φ = 85390566.

The previous prime is 85390549. The next prime is 85390583. The reversal of 85390567 is 76509358.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85390567 - 2¹⁹ = 84866279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85390537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42695283 + 42695284.

It is an arithmetic number, because the mean of its divisors is an integer number (42695284).

Almost surely, 2^85390567 is an apocalyptic number.

85390567 is a deficient number, since it is larger than the sum of its proper divisors (1).

85390567 is an equidigital number, since it uses as much as digits as its factorization.

85390567 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 226800, while the sum is 43.

The square root of 85390567 is about 9240.7016508488. The cubic root of 85390567 is about 440.3553723364.

The spelling of 85390567 in words is "eighty-five million, three hundred ninety thousand, five hundred sixty-seven".