85749563 has 2 divisors, whose sum is σ = 85749564. Its totient is φ = 85749562.

The previous prime is 85749551. The next prime is 85749577. The reversal of 85749563 is 36594758.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85749563 - 2²² = 81555259 is a prime.

It is not a weakly prime, because it can be changed into another prime (85749583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42874781 + 42874782.

It is an arithmetic number, because the mean of its divisors is an integer number (42874782).

Almost surely, 2^85749563 is an apocalyptic number.

85749563 is a deficient number, since it is larger than the sum of its proper divisors (1).

85749563 is an equidigital number, since it uses as much as digits as its factorization.

85749563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 907200, while the sum is 47.

The square root of 85749563 is about 9260.1059929139. The cubic root of 85749563 is about 440.9716183660.

The spelling of 85749563 in words is "eighty-five million, seven hundred forty-nine thousand, five hundred sixty-three".