85666052 has 12 divisors (see below), whose sum is σ = 149988300. Its totient is φ = 42812256.

The previous prime is 85666037. The next prime is 85666069. The reversal of 85666052 is 25066658.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 33016516 + 52649536 = 5746^2 + 7256^2 .

It is a junction number, because it is equal to n+sod(n) for n = 85665997 and 85666015.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7574 + ... + 15122.

It is an arithmetic number, because the mean of its divisors is an integer number (12499025).

Almost surely, 2^85666052 is an apocalyptic number.

It is an amenable number.

85666052 is a deficient number, since it is larger than the sum of its proper divisors (64322248).

85666052 is a wasteful number, since it uses less digits than its factorization.

85666052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10390 (or 10388 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 38.

The square root of 85666052 is about 9255.5957128647. The cubic root of 85666052 is about 440.8284186385.

The spelling of 85666052 in words is "eighty-five million, six hundred sixty-six thousand, fifty-two".