854705840 has 40 divisors (see below), whose sum is σ = 2033413008. Its totient is φ = 333930240.

The previous prime is 854705779. The next prime is 854705903. The reversal of 854705840 is 48507458.

854705840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120791 + ... + 127670.

Almost surely, 2^854705840 is an apocalyptic number.

854705840 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

854705840 is an abundant number, since it is smaller than the sum of its proper divisors (1178707168).

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

854705840 is a wasteful number, since it uses less digits than its factorization.

854705840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248517 (or 248511 counting only the distinct ones).

The product of its (nonzero) digits is 179200, while the sum is 41.

The square root of 854705840 is about 29235.3525718436. The cubic root of 854705840 is about 949.0131358610.

The spelling of 854705840 in words is "eight hundred fifty-four million, seven hundred five thousand, eight hundred forty".