858061 has 4 divisors (see below), whose sum is σ = 895392. Its totient is φ = 820732.

The previous prime is 858043. The next prime is 858073. The reversal of 858061 is 160858.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 160858 = 2 ⋅80429.

It is not a de Polignac number, because 858061 - 2⁵ = 858029 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 (858001) 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, 18631 + ... + 18676.

It is an arithmetic number, because the mean of its divisors is an integer number (223848).

2⁸⁵⁸⁰⁶¹ is an apocalyptic number.

It is an amenable number.

858061 is a deficient number, since it is larger than the sum of its proper divisors (37331).

858061 is a wasteful number, since it uses less digits than its factorization.

858061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37330.

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 858061 is about 926.3158208732. The cubic root of 858061 is about 95.0253302723.

The spelling of 858061 in words is "eight hundred fifty-eight thousand, sixty-one".