856028605 has 8 divisors (see below), whose sum is σ = 1071896832. Its totient is φ = 655047888.

The previous prime is 856028597. The next prime is 856028609. The reversal of 856028605 is 506820658.

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

It is a cyclic number.

It is not a de Polignac number, because 856028605 - 2³ = 856028597 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 (856028609) 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, 3721749 + ... + 3721978.

It is an arithmetic number, because the mean of its divisors is an integer number (133987104).

Almost surely, 2^856028605 is an apocalyptic number.

It is an amenable number.

856028605 is a deficient number, since it is larger than the sum of its proper divisors (215868227).

856028605 is a wasteful number, since it uses less digits than its factorization.

856028605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7443755.

The product of its (nonzero) digits is 115200, while the sum is 40.

The square root of 856028605 is about 29257.9665219577. The cubic root of 856028605 is about 949.5024559947.

The spelling of 856028605 in words is "eight hundred fifty-six million, twenty-eight thousand, six hundred five".