856029660 has 48 divisors (see below), whose sum is σ = 2474207232. Its totient is φ = 220910400.

The previous prime is 856029649. The next prime is 856029661. The reversal of 856029660 is 66920658.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (856029661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 228256 + ... + 231975.

It is an arithmetic number, because the mean of its divisors is an integer number (51545984).

Almost surely, 2^856029660 is an apocalyptic number.

It is an amenable number.

856029660 is an abundant number, since it is smaller than the sum of its proper divisors (1618177572).

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

856029660 is a wasteful number, since it uses less digits than its factorization.

856029660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460274 (or 460272 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 856029660 is about 29257.9845512298. The cubic root of 856029660 is about 949.5028460613.

The spelling of 856029660 in words is "eight hundred fifty-six million, twenty-nine thousand, six hundred sixty".