85766231 has 8 divisors (see below), whose sum is σ = 87205104. Its totient is φ = 84332160.

The previous prime is 85766221. The next prime is 85766237. The reversal of 85766231 is 13266758.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 85766231 - 2¹⁴ = 85749847 is a prime.

It is a super-2 number, since 2×85766231² = 14711692759890722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85766237) 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 in 7 ways as a sum of consecutive naturals, for example, 58301 + ... + 59753.

It is an arithmetic number, because the mean of its divisors is an integer number (10900638).

Almost surely, 2^85766231 is an apocalyptic number.

85766231 is a deficient number, since it is larger than the sum of its proper divisors (1438873).

85766231 is a wasteful number, since it uses less digits than its factorization.

85766231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2401.

The product of its digits is 60480, while the sum is 38.

The square root of 85766231 is about 9261.0059388816. The cubic root of 85766231 is about 441.0001885359. Note that the first 3 decimals are identical.

The spelling of 85766231 in words is "eighty-five million, seven hundred sixty-six thousand, two hundred thirty-one".