85871570 has 16 divisors (see below), whose sum is σ = 154683648. Its totient is φ = 34323120.

The previous prime is 85871557. The next prime is 85871587. The reversal of 85871570 is 7517858.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17087 + ... + 21533.

It is an arithmetic number, because the mean of its divisors is an integer number (9667728).

Almost surely, 2^85871570 is an apocalyptic number.

85871570 is a deficient number, since it is larger than the sum of its proper divisors (68812078).

85871570 is a wasteful number, since it uses less digits than its factorization.

85871570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6385.

The product of its (nonzero) digits is 78400, while the sum is 41.

The square root of 85871570 is about 9266.6914268254. The cubic root of 85871570 is about 441.1806617153.

The spelling of 85871570 in words is "eighty-five million, eight hundred seventy-one thousand, five hundred seventy".