85831366 has 4 divisors (see below), whose sum is σ = 128747052. Its totient is φ = 42915682.

The previous prime is 85831357. The next prime is 85831373. The reversal of 85831366 is 66313858.

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

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21457840 + ... + 21457843.

It is an arithmetic number, because the mean of its divisors is an integer number (32186763).

Almost surely, 2^85831366 is an apocalyptic number.

85831366 is a deficient number, since it is larger than the sum of its proper divisors (42915686).

85831366 is a wasteful number, since it uses less digits than its factorization.

85831366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42915685.

The product of its digits is 103680, while the sum is 40.

The square root of 85831366 is about 9264.5218980798. The cubic root of 85831366 is about 441.1117992029. Note that the first 3 decimals are identical.

The spelling of 85831366 in words is "eighty-five million, eight hundred thirty-one thousand, three hundred sixty-six".