85766147 has 2 divisors, whose sum is σ = 85766148. Its totient is φ = 85766146.

The previous prime is 85766053. The next prime is 85766179. The reversal of 85766147 is 74166758.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85766147 - 2²² = 81571843 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 85766098 and 85766107.

It is not a weakly prime, because it can be changed into another prime (85766347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42883073 + 42883074.

It is an arithmetic number, because the mean of its divisors is an integer number (42883074).

Almost surely, 2^85766147 is an apocalyptic number.

85766147 is a deficient number, since it is larger than the sum of its proper divisors (1).

85766147 is an equidigital number, since it uses as much as digits as its factorization.

85766147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 282240, while the sum is 44.

The square root of 85766147 is about 9261.0014037360. The cubic root of 85766147 is about 441.0000445630. Note that the first 4 decimals are identical.

The spelling of 85766147 in words is "eighty-five million, seven hundred sixty-six thousand, one hundred forty-seven".