85771748 has 6 divisors (see below), whose sum is σ = 150100566. Its totient is φ = 42885872.

The previous prime is 85771747. The next prime is 85771753. The reversal of 85771748 is 84717758.

It can be written as a sum of positive squares in only one way, i.e., 50154724 + 35617024 = 7082^2 + 5968^2 .

It is not an unprimeable number, because it can be changed into a prime (85771747) 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, 10721465 + ... + 10721472.

It is an arithmetic number, because the mean of its divisors is an integer number (25016761).

Almost surely, 2^85771748 is an apocalyptic number.

It is an amenable number.

85771748 is a deficient number, since it is larger than the sum of its proper divisors (64328818).

85771748 is a wasteful number, since it uses less digits than its factorization.

85771748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21442941 (or 21442939 counting only the distinct ones).

The product of its digits is 439040, while the sum is 47.

The square root of 85771748 is about 9261.3037959026. The cubic root of 85771748 is about 441.0096442616.

The spelling of 85771748 in words is "eighty-five million, seven hundred seventy-one thousand, seven hundred forty-eight".