85418657 has 2 divisors, whose sum is σ = 85418658. Its totient is φ = 85418656.

The previous prime is 85418651. The next prime is 85418677. The reversal of 85418657 is 75681458.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85359121 + 59536 = 9239^2 + 244^2 .

It is a cyclic number.

It is not a de Polignac number, because 85418657 - 2⁸ = 85418401 is a prime.

It is not a weakly prime, because it can be changed into another prime (85418651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42709328 + 42709329.

It is an arithmetic number, because the mean of its divisors is an integer number (42709329).

Almost surely, 2^85418657 is an apocalyptic number.

It is an amenable number.

85418657 is a deficient number, since it is larger than the sum of its proper divisors (1).

85418657 is an equidigital number, since it uses as much as digits as its factorization.

85418657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 268800, while the sum is 44.

The square root of 85418657 is about 9242.2214321017. The cubic root of 85418657 is about 440.4036533380.

The spelling of 85418657 in words is "eighty-five million, four hundred eighteen thousand, six hundred fifty-seven".