85275643 has 2 divisors, whose sum is σ = 85275644. Its totient is φ = 85275642.

The previous prime is 85275623. The next prime is 85275647. The reversal of 85275643 is 34657258.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85275643 - 2¹³ = 85267451 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 85275596 and 85275605.

It is not a weakly prime, because it can be changed into another prime (85275647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42637821 + 42637822.

It is an arithmetic number, because the mean of its divisors is an integer number (42637822).

Almost surely, 2^85275643 is an apocalyptic number.

85275643 is a deficient number, since it is larger than the sum of its proper divisors (1).

85275643 is an equidigital number, since it uses as much as digits as its factorization.

85275643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 201600, while the sum is 40.

The square root of 85275643 is about 9234.4811982049. The cubic root of 85275643 is about 440.1577309844.

The spelling of 85275643 in words is "eighty-five million, two hundred seventy-five thousand, six hundred forty-three".