854721 has 12 divisors (see below), whose sum is σ = 1411072. Its totient is φ = 488376.

The previous prime is 854713. The next prime is 854729. The reversal of 854721 is 127458.

854721 = T₂₃₈ + T₂₃₉ + ... + T₂₆₄.

It is an interprime number because it is at equal distance from previous prime (854713) and next prime (854729).

It is not a de Polignac number, because 854721 - 2³ = 854713 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 854721.

It is not an unprimeable number, because it can be changed into a prime (854729) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6721 + ... + 6846.

2⁸⁵⁴⁷²¹ is an apocalyptic number.

It is an amenable number.

854721 is a deficient number, since it is larger than the sum of its proper divisors (556351).

854721 is a wasteful number, since it uses less digits than its factorization.

854721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13580 (or 13577 counting only the distinct ones).

The product of its digits is 2240, while the sum is 27.

The square root of 854721 is about 924.5112222142. The cubic root of 854721 is about 94.9018746740.

The spelling of 854721 in words is "eight hundred fifty-four thousand, seven hundred twenty-one".