855366040 has 16 divisors (see below), whose sum is σ = 1924573680. Its totient is φ = 342146400.

The previous prime is 855365989. The next prime is 855366041. The reversal of 855366040 is 40663558.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855366041) 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, 10692036 + ... + 10692115.

It is an arithmetic number, because the mean of its divisors is an integer number (120285855).

Almost surely, 2^855366040 is an apocalyptic number.

It is an amenable number.

855366040 is an abundant number, since it is smaller than the sum of its proper divisors (1069207640).

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

855366040 is a wasteful number, since it uses less digits than its factorization.

855366040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21384162 (or 21384158 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 37.

The square root of 855366040 is about 29246.6415165913. The cubic root of 855366040 is about 949.2574215530.

The spelling of 855366040 in words is "eight hundred fifty-five million, three hundred sixty-six thousand, forty".