85066138 has 4 divisors (see below), whose sum is σ = 127599210. Its totient is φ = 42533068.

The previous prime is 85066129. The next prime is 85066151. The reversal of 85066138 is 83166058.

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., 78801129 + 6265009 = 8877^2 + 2503^2 .

It is a junction number, because it is equal to n+sod(n) for n = 85066097 and 85066106.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21266533 + ... + 21266536.

Almost surely, 2^85066138 is an apocalyptic number.

85066138 is a deficient number, since it is larger than the sum of its proper divisors (42533072).

85066138 is a wasteful number, since it uses less digits than its factorization.

85066138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42533071.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 85066138 is about 9223.1305964949. The cubic root of 85066138 is about 439.7969758946.

The spelling of 85066138 in words is "eighty-five million, sixty-six thousand, one hundred thirty-eight".