85975906 has 4 divisors (see below), whose sum is σ = 128963862. Its totient is φ = 42987952.

The previous prime is 85975889. The next prime is 85975907. The reversal of 85975906 is 60957958.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 83557881 + 2418025 = 9141^2 + 1555^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 85975906.

It is not an unprimeable number, because it can be changed into a prime (85975907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21493975 + ... + 21493978.

Almost surely, 2^85975906 is an apocalyptic number.

85975906 is a deficient number, since it is larger than the sum of its proper divisors (42987956).

85975906 is a wasteful number, since it uses less digits than its factorization.

85975906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42987955.

The product of its (nonzero) digits is 680400, while the sum is 49.

The square root of 85975906 is about 9272.3193430770. The cubic root of 85975906 is about 441.3592710624.

The spelling of 85975906 in words is "eighty-five million, nine hundred seventy-five thousand, nine hundred six".