856006000 has 40 divisors (see below), whose sum is σ = 2069827344. Its totient is φ = 342401600.

The previous prime is 856005991. The next prime is 856006009. The reversal of 856006000 is 600658.

It is an interprime number because it is at equal distance from previous prime (856005991) and next prime (856006009).

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (856006009) 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, 212002 + ... + 216001.

Almost surely, 2^856006000 is an apocalyptic number.

856006000 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

856006000 is an abundant number, since it is smaller than the sum of its proper divisors (1213821344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

856006000 is a wasteful number, since it uses less digits than its factorization.

856006000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428026 (or 428010 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 856006000 is about 29257.5802143650. The cubic root of 856006000 is about 949.4940981385.

Adding to 856006000 its reverse (600658), we get a palindrome (856606658).

The spelling of 856006000 in words is "eight hundred fifty-six million, six thousand".