85866916 has 6 divisors (see below), whose sum is σ = 150267110. Its totient is φ = 42933456.

The previous prime is 85866857. The next prime is 85866919. The reversal of 85866916 is 61966858.

It can be written as a sum of positive squares in only one way, i.e., 85636516 + 230400 = 9254^2 + 480^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 85866916.

It is not an unprimeable number, because it can be changed into a prime (85866919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10733361 + ... + 10733368.

Almost surely, 2^85866916 is an apocalyptic number.

It is an amenable number.

85866916 is a deficient number, since it is larger than the sum of its proper divisors (64400194).

85866916 is a wasteful number, since it uses less digits than its factorization.

85866916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21466733 (or 21466731 counting only the distinct ones).

The product of its digits is 622080, while the sum is 49.

The square root of 85866916 is about 9266.4403089860. The cubic root of 85866916 is about 441.1726913168.

The spelling of 85866916 in words is "eighty-five million, eight hundred sixty-six thousand, nine hundred sixteen".