854128681 has 16 divisors (see below), whose sum is σ = 993936384. Its totient is φ = 718876944.

The previous prime is 854128661. The next prime is 854128699. The reversal of 854128681 is 186821458.

854128681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 854128681 - 2¹⁷ = 853997609 is a prime.

It is a super-2 number, since 2×854128681² = 1459071607413599522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (854128661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92626 + ... + 101428.

It is an arithmetic number, because the mean of its divisors is an integer number (62121024).

Almost surely, 2^854128681 is an apocalyptic number.

It is an amenable number.

854128681 is a deficient number, since it is larger than the sum of its proper divisors (139807703).

854128681 is a wasteful number, since it uses less digits than its factorization.

854128681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9060.

The product of its digits is 122880, while the sum is 43.

The square root of 854128681 is about 29225.4799960582. The cubic root of 854128681 is about 948.7994737322.

The spelling of 854128681 in words is "eight hundred fifty-four million, one hundred twenty-eight thousand, six hundred eighty-one".