858620085 has 16 divisors (see below), whose sum is σ = 1374157440. Its totient is φ = 457808960.

The previous prime is 858620057. The next prime is 858620093. The reversal of 858620085 is 580026858.

It is not a de Polignac number, because 858620085 - 2⁵ = 858620053 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97651 + ... + 106079.

It is an arithmetic number, because the mean of its divisors is an integer number (85884840).

Almost surely, 2^858620085 is an apocalyptic number.

It is an amenable number.

858620085 is a deficient number, since it is larger than the sum of its proper divisors (515537355).

858620085 is a wasteful number, since it uses less digits than its factorization.

858620085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15228.

The product of its (nonzero) digits is 153600, while the sum is 42.

The square root of 858620085 is about 29302.2197964591. The cubic root of 858620085 is about 950.4596427624.

The spelling of 858620085 in words is "eight hundred fifty-eight million, six hundred twenty thousand, eighty-five".