85970771 has 4 divisors (see below), whose sum is σ = 86245752. Its totient is φ = 85695792.

The previous prime is 85970743. The next prime is 85970821. The reversal of 85970771 is 17707958.

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

It is a cyclic number.

It is not a de Polignac number, because 85970771 - 2¹⁰ = 85969747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85970671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137021 + ... + 137646.

It is an arithmetic number, because the mean of its divisors is an integer number (21561438).

Almost surely, 2^85970771 is an apocalyptic number.

85970771 is a deficient number, since it is larger than the sum of its proper divisors (274981).

85970771 is a wasteful number, since it uses less digits than its factorization.

85970771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274980.

The product of its (nonzero) digits is 123480, while the sum is 44.

The square root of 85970771 is about 9272.0424395060. The cubic root of 85970771 is about 441.3504840077.

The spelling of 85970771 in words is "eighty-five million, nine hundred seventy thousand, seven hundred seventy-one".