85861567 has 8 divisors (see below), whose sum is σ = 94159872. Its totient is φ = 77645400.

The previous prime is 85861549. The next prime is 85861609. The reversal of 85861567 is 76516858.

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 85861567 - 2⁷ = 85861439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85861367) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18333 + ... + 22534.

It is an arithmetic number, because the mean of its divisors is an integer number (11769984).

Almost surely, 2^85861567 is an apocalyptic number.

85861567 is a deficient number, since it is larger than the sum of its proper divisors (8298305).

85861567 is a wasteful number, since it uses less digits than its factorization.

85861567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41069.

The product of its digits is 403200, while the sum is 46.

The square root of 85861567 is about 9266.1516823329. The cubic root of 85861567 is about 441.1635303119.

It can be divided in two parts, 8586 and 1567, that added together give a triangular number (10153 = T₁₄₂).

The spelling of 85861567 in words is "eighty-five million, eight hundred sixty-one thousand, five hundred sixty-seven".