85720886 has 8 divisors (see below), whose sum is σ = 128651304. Its totient is φ = 42837120.

The previous prime is 85720829. The next prime is 85720889. The reversal of 85720886 is 68802758.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85720889) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6635 + ... + 14678.

It is an arithmetic number, because the mean of its divisors is an integer number (16081413).

Almost surely, 2^85720886 is an apocalyptic number.

85720886 is a deficient number, since it is larger than the sum of its proper divisors (42930418).

85720886 is a wasteful number, since it uses less digits than its factorization.

85720886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23326.

The product of its (nonzero) digits is 215040, while the sum is 44.

The square root of 85720886 is about 9258.5574470324. The cubic root of 85720886 is about 440.9224552270.

The spelling of 85720886 in words is "eighty-five million, seven hundred twenty thousand, eight hundred eighty-six".